Ralf Janssen

Early expression of chelicerate hedgehog orthologs and its bearing on the homology of arthropod head segments

Janssen, Ralf

Ingår i DISCOVER DEVELOPMENTAL BIOLOGY, 2025

• DOI för Early expression of chelicerate hedgehog orthologs and its bearing on the homology of arthropod head segments
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Single-cell RNA sequencing of mid-to-late stage spider embryos: new insights into spider development

Medina-Jiménez, Brenda Irene; Budd, Graham E.; Janssen, Ralf

Ingår i BMC Genomics, 2024

• DOI för Single-cell RNA sequencing of mid-to-late stage spider embryos: new insights into spider development
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Hox genes in spiders: Their significance for development and evolution

Turetzek, Natascha; Pechmann, Matthias; Janssen, Ralf; Prpic, Nikola-Michael

Ingår i Seminars in Cell and Developmental Biology, s. 24-34, 2024

• DOI för Hox genes in spiders: Their significance for development and evolution

Developmental and genomic insight into the origin of the tardigrade body plan

Smith, Frank W.; Game, Mandy; Mapalo, Marc A.; Chavarria, Raul A. et al.

Ingår i Evolution & Development, 2024

• DOI för Developmental and genomic insight into the origin of the tardigrade body plan
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Single-cell sequencing suggests a conserved function of Hedgehog-signalling in spider eye development

Medina-Jiménez, Brenda I.; Budd, Graham E.; Pechmann, Matthias; Posnien, Nico et al.

Ingår i EvoDevo, 2024

• DOI för Single-cell sequencing suggests a conserved function of Hedgehog-signalling in spider eye development
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Early expression of chelicerate hedgehog orthologs and its bearing on the homology of arthropod head segments

Janssen, Ralf

Ingår i DISCOVER DEVELOPMENTAL BIOLOGY, 2025

• DOI för Early expression of chelicerate hedgehog orthologs and its bearing on the homology of arthropod head segments
• Ladda ner fulltext (pdf) av Early expression of chelicerate hedgehog orthologs and its bearing on the homology of arthropod head segments

Single-cell RNA sequencing of mid-to-late stage spider embryos: new insights into spider development

Medina-Jiménez, Brenda Irene; Budd, Graham E.; Janssen, Ralf

Ingår i BMC Genomics, 2024

• DOI för Single-cell RNA sequencing of mid-to-late stage spider embryos: new insights into spider development
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Developmental and genomic insight into the origin of the tardigrade body plan

Smith, Frank W.; Game, Mandy; Mapalo, Marc A.; Chavarria, Raul A. et al.

Ingår i Evolution & Development, 2024

• DOI för Developmental and genomic insight into the origin of the tardigrade body plan
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Single-cell sequencing suggests a conserved function of Hedgehog-signalling in spider eye development

Medina-Jiménez, Brenda I.; Budd, Graham E.; Pechmann, Matthias; Posnien, Nico et al.

Ingår i EvoDevo, 2024

• DOI för Single-cell sequencing suggests a conserved function of Hedgehog-signalling in spider eye development
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New insights into mesoderm and endoderm development, and the nature of the onychophoran blastopore

Janssen, Ralf; Budd, Graham

Ingår i Frontiers in Zoology, 2024

• DOI för New insights into mesoderm and endoderm development, and the nature of the onychophoran blastopore
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Evolution of the Spider Homeobox Gene Repertoire by Tandem and Whole Genome Duplication

Aase-Remedios, Madeleine E.; Janssen, Ralf; Leite, Daniel J.; Sumner-Rooney, Lauren et al.

Ingår i Molecular biology and evolution, 2023

• DOI för Evolution of the Spider Homeobox Gene Repertoire by Tandem and Whole Genome Duplication
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Expression of posterior Hox genes and opisthosomal appendage development in a mygalomorph spider

Janssen, Ralf; Pechmann, Matthias

Ingår i Development, Genes and Evolution, s. 107-121, 2023

• DOI för Expression of posterior Hox genes and opisthosomal appendage development in a mygalomorph spider
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Comment on "The lower Cambrian lobopodian Cardiodictyon resolves the origin of euarthropod brains"

Budd, Graham; Mayer, Georg; Janssen, Ralf; Eriksson, B. Joakim

Ingår i Science, 2023

• DOI för Comment on "The lower Cambrian lobopodian Cardiodictyon resolves the origin of euarthropod brains"

Expression of netrin and its receptors uncoordinated-5 and frazzled in arthropods and onychophorans suggests conserved and diverged functions in neuronal pathfinding and synaptogenesis

Janssen, Ralf; Budd, Graham E.

Ingår i Developmental Dynamics, s. 172-185, 2023

• DOI för Expression of netrin and its receptors uncoordinated-5 and frazzled in arthropods and onychophorans suggests conserved and diverged functions in neuronal pathfinding and synaptogenesis

Phylogenetic analysis of forkhead transcription factors in the Panarthropoda

Schomburg, Christoph; Janssen, Ralf; Prpic, Nikola-Michael

Ingår i Development, Genes and Evolution, s. 39-48, 2022

• DOI för Phylogenetic analysis of forkhead transcription factors in the Panarthropoda
• Ladda ner fulltext (pdf) av Phylogenetic analysis of forkhead transcription factors in the Panarthropoda

Embryonic expression patterns of Wnt genes in the RTA-clade spider Cupiennius salei

Janssen, Ralf; Eriksson, Bo Joakim

Ingår i Gene Expression Patterns, 2022

• DOI för Embryonic expression patterns of Wnt genes in the RTA-clade spider Cupiennius salei
• Ladda ner fulltext (pdf) av Embryonic expression patterns of Wnt genes in the RTA-clade spider Cupiennius salei

Lack of evidence for conserved parasegmental grooves in arthropods

Janssen, Ralf; Turetzek, Natascha; Pechmann, Matthias

Ingår i Development, Genes and Evolution, s. 27-37, 2022

• DOI för Lack of evidence for conserved parasegmental grooves in arthropods
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A comprehensive study of arthropod and onychophoran Fox gene expression patterns

Janssen, Ralf; Schomburg, Christoph; Prpic, Nikola-Michael; Budd, Graham

Ingår i PLOS ONE, 2022

• DOI för A comprehensive study of arthropod and onychophoran Fox gene expression patterns
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Molecular evidence for a single origin of ultrafiltration-based excretory organs

Gasiorowski, Ludwik; Andrikou, Carmen; Janssen, Ralf; Bump, Paul et al.

Ingår i Current Biology, s. 3629-+, 2021

• DOI för Molecular evidence for a single origin of ultrafiltration-based excretory organs

Widespread retention of ohnologs in key developmental gene families following whole-genome duplication in arachnopulmonates

Harper, Amber; Gonzalez, Luis Baudouin; Schonauer, Anna; Janssen, Ralf et al.

Ingår i G3, 2021

• DOI för Widespread retention of ohnologs in key developmental gene families following whole-genome duplication in arachnopulmonates
• Ladda ner fulltext (pdf) av Widespread retention of ohnologs in key developmental gene families following whole-genome duplication in arachnopulmonates

Panarthropod tiptop/teashirt and spalt orthologs and their potential role as "trunk"-selector genes

Jimenez, Brenda Irene Medina; Budd, Graham; Janssen, Ralf

Ingår i EvoDevo, 2021

• DOI för Panarthropod tiptop/teashirt and spalt orthologs and their potential role as "trunk"-selector genes
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Oscillating waves of Fox, Cyclin and CDK gene expression indicate unique spatiotemporal control of cell cycling during nervous system development in onychophorans

Janssen, Ralf; Budd, Graham E.

Ingår i Arthropod structure & development, 2021

• DOI för Oscillating waves of Fox, Cyclin and CDK gene expression indicate unique spatiotemporal control of cell cycling during nervous system development in onychophorans

A chelicerate Wnt gene expression atlas: novel insights into the complexity of arthropod Wnt-patterning

Janssen, Ralf; Pechmann, Matthias; Turetzek, Natascha

Ingår i EvoDevo, 2021

• DOI för A chelicerate Wnt gene expression atlas: novel insights into the complexity of arthropod Wnt-patterning
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Expression of the zinc finger transcription factor Sp6-9 in the velvet worm Euperipatoides kanangrensis suggests a conserved role in appendage development in Panarthropoda

Janssen, Ralf; Budd, Graham

Ingår i Development, Genes and Evolution, s. 239-245, 2020

• DOI för Expression of the zinc finger transcription factor Sp6-9 in the velvet worm Euperipatoides kanangrensis suggests a conserved role in appendage development in Panarthropoda
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The forkhead box containing transcription factor FoxB is a potential component of dorsal-ventral body axis formation in the spider Parasteatoda tepidariorum

Heingård, Miriam; Janssen, Ralf

Ingår i Development, Genes and Evolution, s. 65-73, 2020

• DOI för The forkhead box containing transcription factor FoxB is a potential component of dorsal-ventral body axis formation in the spider Parasteatoda tepidariorum
• Ladda ner fulltext (pdf) av The forkhead box containing transcription factor FoxB is a potential component of dorsal-ventral body axis formation in the spider Parasteatoda tepidariorum

The embryonic expression pattern of a second, hitherto unrecognized, paralog of the pair-rule gene sloppy-paired in the beetle Tribolium castaneum

Janssen, Ralf

Ingår i Development, Genes and Evolution, s. 247-256, 2020

• DOI för The embryonic expression pattern of a second, hitherto unrecognized, paralog of the pair-rule gene sloppy-paired in the beetle Tribolium castaneum
• Ladda ner fulltext (pdf) av The embryonic expression pattern of a second, hitherto unrecognized, paralog of the pair-rule gene sloppy-paired in the beetle Tribolium castaneum

Phylogenetic analysis and embryonic expression of panarthropod Dmrt genes

Panara, Virginia; Budd, Graham; Janssen, Ralf

Ingår i Frontiers in Zoology, 2019

• DOI för Phylogenetic analysis and embryonic expression of panarthropod Dmrt genes
• Ladda ner fulltext (pdf) av Phylogenetic analysis and embryonic expression of panarthropod Dmrt genes

FoxB, a new and highly conserved key factor in arthropod dorsal-ventral (DV) limb patterning

Heingård, Miriam; Turetzek, Natascha; Prpic, Nikola-Michael; Janssen, Ralf

Ingår i EvoDevo, 2019

• DOI för FoxB, a new and highly conserved key factor in arthropod dorsal-ventral (DV) limb patterning
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Embryonic expression of priapulid Wnt genes

Högvall, Mattias; Vellutini, Bruno C.; Martin-Duran, Jose M.; Hejnol, Andreas et al.

Ingår i Development, Genes and Evolution, s. 125-135, 2019

• DOI för Embryonic expression of priapulid Wnt genes
• Ladda ner fulltext (pdf) av Embryonic expression of priapulid Wnt genes

The last common ancestor of Ecdysozoa had an adult terminal mouth

Ortega-Hernandez, Javier; Janssen, Ralf; Budd, Graham

Ingår i Arthropod structure & development, s. 155-158, 2019

• DOI för The last common ancestor of Ecdysozoa had an adult terminal mouth

Gene expression analysis of potential morphogen signalling modifying factors in Panarthropoda

Hogvall, Mattias; Budd, Graham; Janssen, Ralf

Ingår i EvoDevo, 2018

• DOI för Gene expression analysis of potential morphogen signalling modifying factors in Panarthropoda
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Embryonic expression patterns and phylogenetic analysis of panarthropod sox genes: insight into nervous system development, segmentation and gonadogenesis

Janssen, Ralf; Andersson, Emil; Betnér, Ellinor; Bijl, Sifra et al.

Ingår i BMC Evolutionary Biology, 2018

• DOI för Embryonic expression patterns and phylogenetic analysis of panarthropod sox genes: insight into nervous system development, segmentation and gonadogenesis
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Embryonic expression of a Long Toll (Loto) gene in the onychophorans Euperipatoides kanangrensis and Cephalofovea clandestina

Janssen, Ralf; Lionel, Linushiya

Ingår i Development, Genes and Evolution, s. 171-178, 2018

• DOI för Embryonic expression of a Long Toll (Loto) gene in the onychophorans Euperipatoides kanangrensis and Cephalofovea clandestina
• Ladda ner fulltext (pdf) av Embryonic expression of a Long Toll (Loto) gene in the onychophorans Euperipatoides kanangrensis and Cephalofovea clandestina

The house spider genome reveals an ancient whole-genome duplication during arachnid evolution

Schwager, Evelyn E.; Sharma, Prashant P.; Clarke, Thomas; Leite, Daniel J. et al.

Ingår i BMC Biology, 2017

• DOI för The house spider genome reveals an ancient whole-genome duplication during arachnid evolution
• Ladda ner fulltext (pdf) av The house spider genome reveals an ancient whole-genome duplication during arachnid evolution

Comparative analysis of gene expression patterns in the arthropod labrum and the onychophoran frontal appendages, and its implications for the arthropod head problem

Janssen, Ralf

Ingår i EvoDevo, 2017

• DOI för Comparative analysis of gene expression patterns in the arthropod labrum and the onychophoran frontal appendages, and its implications for the arthropod head problem
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Investigation of endoderm marker-genes during gastrulation and gut-development in the velvet worm Euperipatoides kanangrensis

Janssen, Ralf; Budd, Graham

Ingår i Developmental Biology, s. 155-164, 2017

• DOI för Investigation of endoderm marker-genes during gastrulation and gut-development in the velvet worm Euperipatoides kanangrensis

Origin and Evolution of the Panarthropod Head - a Deep Time Perspective

Ortega-Hernandez, J.; Janssen, Ralf; Budd, Graham

Ingår i Integrative and Comparative Biology, 2017

A molecular view of onychophoran segmentation

Janssen, Ralf

Ingår i Arthropod structure & development, s. 341-353, 2017

• DOI för A molecular view of onychophoran segmentation

Gene expression reveals evidence for EGFR-dependent proximal-distal limb patterning in a myriapod

Janssen, Ralf

Ingår i Evolution & Development, s. 124-135, 2017

• DOI för Gene expression reveals evidence for EGFR-dependent proximal-distal limb patterning in a myriapod
• Ladda ner fulltext (pdf) av Gene expression reveals evidence for EGFR-dependent proximal-distal limb patterning in a myriapod

Gene expression analysis reveals that Delta/Notch signalling is not involved in onychophoran segmentation

Janssen, Ralf; Budd, Graham E.

Ingår i Development, Genes and Evolution, s. 69-77, 2016

• DOI för Gene expression analysis reveals that Delta/Notch signalling is not involved in onychophoran segmentation
• Ladda ner fulltext (pdf) av Gene expression analysis reveals that Delta/Notch signalling is not involved in onychophoran segmentation

The evolution and expression of panarthropod frizzled genes

Janssen, Ralf; Schönauer, Anna; Weber, Melanie; Turetzek, Natascha et al.

Ingår i Frontiers in Ecology and Evolution, 2015

• DOI för The evolution and expression of panarthropod frizzled genes
• Ladda ner fulltext (pdf) av The evolution and expression of panarthropod frizzled genes

Aspects of dorso-ventral and proximo-distal limb patterning in onychophorans

Janssen, Ralf; Jörgensen, Mette; Prpic, Nikola-Michael; Budd, Graham

Ingår i Evolution & Development, s. 21-33, 2015

• DOI för Aspects of dorso-ventral and proximo-distal limb patterning in onychophorans
• Ladda ner fulltext (pdf) av Aspects of dorso-ventral and proximo-distal limb patterning in onychophorans

Fate and nature of the onychophoran mouth-anus furrow and its contribution to the blastopore

Janssen, Ralf; Jorgensen, Mette; Lagebro, Linda; Budd, Graham E.

Ingår i Proceedings of the Royal Society of London. Biological Sciences, 2015

• DOI för Fate and nature of the onychophoran mouth-anus furrow and its contribution to the blastopore

Gene expression suggests double-segmental and single-segmental patterning mechanisms during posterior segment addition in the beetle Tribolium castaneum

Janssen, Ralf

Ingår i International Journal of Developmental Biology, s. 343-347, 2014

• DOI för Gene expression suggests double-segmental and single-segmental patterning mechanisms during posterior segment addition in the beetle Tribolium castaneum

Onychophoran Hox genes and the evolution of arthropod Hox gene expression

Janssen, Ralf; Eriksson, Bo Joakim; Tait, Noel N.; Budd, Graham E.

Ingår i Frontiers in Zoology, s. 22, 2014

• DOI för Onychophoran Hox genes and the evolution of arthropod Hox gene expression
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Analysis of the Wnt gene repertoire in an onychophoran provides new insights into the evolution of segmentation

Hogvall, Mattias; Schoenauer, Anna; Budd, Graham E.; McGregor, Alistair P. et al.

Ingår i EvoDevo, s. 14, 2014

• DOI för Analysis of the Wnt gene repertoire in an onychophoran provides new insights into the evolution of segmentation
• Ladda ner fulltext (pdf) av Analysis of the Wnt gene repertoire in an onychophoran provides new insights into the evolution of segmentation

Identification and embryonic expression of Wnt2, Wnt4, Wnt5 and Wnt9 in the millipede Glomeris marginata (Myriapoda: Diplopoda)

Janssen, Ralf; Posnien, Nico

Ingår i Gene Expression Patterns, s. 55-61, 2014

• DOI för Identification and embryonic expression of Wnt2, Wnt4, Wnt5 and Wnt9 in the millipede Glomeris marginata (Myriapoda: Diplopoda)
• Ladda ner fulltext (pdf) av Identification and embryonic expression of Wnt2, Wnt4, Wnt5 and Wnt9 in the millipede Glomeris marginata (Myriapoda: Diplopoda)

Expression of arthropod distal limb-patterning genes in the onychophoran Euperipatoides kanangrensis

Oliveira, Marta Bastos; Liedholm, Simon Eckerström; Lopez, Jordi Estefa; Lochte, Annalena A. et al.

Ingår i Development, Genes and Evolution, s. 87-96, 2014

• DOI för Expression of arthropod distal limb-patterning genes in the onychophoran Euperipatoides kanangrensis
• Ladda ner fulltext (pdf) av Expression of arthropod distal limb-patterning genes in the onychophoran Euperipatoides kanangrensis

Developmental abnormalities in Glomeris marginata (Villers 1789) (Myriapoda: Diplopoda): implications for body axis determination in a myriapod

Janssen, Ralf

Ingår i Die Naturwissenschaften, s. 33-43, 2013

• DOI för Developmental abnormalities in Glomeris marginata (Villers 1789) (Myriapoda: Diplopoda): implications for body axis determination in a myriapod
• Ladda ner fulltext (pdf) av Developmental abnormalities in Glomeris marginata (Villers 1789) (Myriapoda: Diplopoda): implications for body axis determination in a myriapod

A curious abnormally developed embryo of the pill millipede Glomeris marginata (Villers, 1789)

Janssen, Ralf

Ingår i ZooKeys, s. 67-75, 2013

• DOI för A curious abnormally developed embryo of the pill millipede Glomeris marginata (Villers, 1789)
• Ladda ner fulltext (pdf) av A curious abnormally developed embryo of the pill millipede Glomeris marginata (Villers, 1789)

Deciphering the onychophoran 'segmentation gene cascade': Gene expression reveals limited involvement of pair rule gene orthologs in segmentation, but a highly conserved segment polarity gene network

Janssen, Ralf; Budd, Graham E.

Ingår i Developmental Biology, s. 224-234, 2013

• DOI för Deciphering the onychophoran 'segmentation gene cascade': Gene expression reveals limited involvement of pair rule gene orthologs in segmentation, but a highly conserved segment polarity gene network

Segment polarity gene expression in a myriapod reveals conserved and diverged aspects of early head patterning in arthropods

Janssen, Ralf

Ingår i Development, Genes and Evolution, s. 299-309, 2012

• DOI för Segment polarity gene expression in a myriapod reveals conserved and diverged aspects of early head patterning in arthropods

Expression of pair rule gene orthologs in the blastoderm of a myriapod: evidence for pair rule-like mechanisms?

Janssen, Ralf; Damen, Wim G. M.; Budd, Graham E.

Ingår i BMC Developmental Biology, s. 15, 2012

• DOI för Expression of pair rule gene orthologs in the blastoderm of a myriapod: evidence for pair rule-like mechanisms?
• Ladda ner fulltext (pdf) av Expression of pair rule gene orthologs in the blastoderm of a myriapod: evidence for pair rule-like mechanisms?

Deuterostomic Development in the Protostome Priapulus caudatus

Martin-Duran, Jose M.; Janssen, Ralf; Wennberg, Sofia; Budd, Graham E. et al.

Ingår i Current Biology, s. 2161-2166, 2012

• DOI för Deuterostomic Development in the Protostome Priapulus caudatus

Expression of collier in the premandibular segment of myriapods: support for the traditional Atelocerata concept or a case of convergence?

Janssen, Ralf; Damen, Wim G. M.; Budd, Graham E.

Ingår i BMC Evolutionary Biology, s. 50, 2011

• DOI för Expression of collier in the premandibular segment of myriapods: support for the traditional Atelocerata concept or a case of convergence?
• Ladda ner fulltext (pdf) av Expression of collier in the premandibular segment of myriapods: support for the traditional Atelocerata concept or a case of convergence?

Expression of myriapod pair rule gene orthologs

Janssen, Ralf; Budd, Graham E; Prpic, Nikola-Michael; Damen, Wim

Ingår i EvoDevo, 2011

• DOI för Expression of myriapod pair rule gene orthologs
• Ladda ner fulltext (pdf) av Expression of myriapod pair rule gene orthologs

An abnormally developed embryo of the pill millipede Glomeris marginata that lacks dorsal segmental derivatives

Janssen, Ralf

Ingår i Development, Genes and Evolution, s. 351-355, 2011

• DOI för An abnormally developed embryo of the pill millipede Glomeris marginata that lacks dorsal segmental derivatives

Diplosegmentation in the pill millipede Glomeris marginata is the result of dorsal fusion

Janssen, Ralf

Ingår i Evolution & Development, s. 477-487, 2011

• DOI för Diplosegmentation in the pill millipede Glomeris marginata is the result of dorsal fusion

Gene expression suggests conserved mechanisms patterning the heads of insects and myriapods

Janssen, Ralf; Budd, Graham E.; Damen, Wim G. M.

Ingår i Developmental Biology, s. 64-72, 2011

• DOI för Gene expression suggests conserved mechanisms patterning the heads of insects and myriapods

Conservation, loss, and redeployment of Wnt ligands in protostomes: implications for understanding the evolution of segment formation

Janssen, Ralf; Le Gouar, Martine; Pechmann, Matthias; Poulin, Francis et al.

Ingår i BMC Evolutionary Biology, s. 374, 2010

• DOI för Conservation, loss, and redeployment of Wnt ligands in protostomes: implications for understanding the evolution of segment formation
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Gene expression suggests conserved aspects of Hox gene regulation in arthropods and provides additional support for monophyletic Myriapoda

Janssen, Ralf; Budd, Graham E.

Ingår i EvoDevo, 2010

• DOI för Gene expression suggests conserved aspects of Hox gene regulation in arthropods and provides additional support for monophyletic Myriapoda
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Head patterning and Hox gene expression in an onychophoran and its implications for the arthropod head problem

Eriksson, Bo Joakim; Tait, Noel N.; Budd, Graham E.; Janssen, Ralf et al.

Ingår i Development, Genes and Evolution, s. 117-122, 2010

• DOI för Head patterning and Hox gene expression in an onychophoran and its implications for the arthropod head problem
• Ladda ner fulltext (pdf) av Head patterning and Hox gene expression in an onychophoran and its implications for the arthropod head problem

Gene expression patterns in an onychophoran reveal that regionalization predates limb segmentation in pan-arthropods

Janssen, Ralf; Eriksson, Bo Joakim; Budd, Graham E.; Akam, Michael et al.

Ingår i Evolution & Development, s. 363-372, 2010

• DOI för Gene expression patterns in an onychophoran reveal that regionalization predates limb segmentation in pan-arthropods
• Ladda ner fulltext (pdf) av Gene expression patterns in an onychophoran reveal that regionalization predates limb segmentation in pan-arthropods

Comprehensive survey of developmental genes in the pea aphid, Acyrthosiphon pisum: frequent lineage-specific duplications and losses of developmental genes

Shigenobu, S.; Bickel, R. D.; Brisson, J. A.; Butts, T. et al.

Ingår i Insect molecular biology (Print), s. 47-62, 2010

• DOI för Comprehensive survey of developmental genes in the pea aphid, Acyrthosiphon pisum: frequent lineage-specific duplications and losses of developmental genes

Genome Sequence of the Pea Aphid Acyrthosiphon pisum

Richards, Stephen; Gibbs, Richard A.; Gerardo, Nicole M.; Moran, Nancy et al.

Ingår i PLoS biology, 2010

• DOI för Genome Sequence of the Pea Aphid Acyrthosiphon pisum
• Ladda ner fulltext (pdf) av Genome Sequence of the Pea Aphid Acyrthosiphon pisum

Embryonic development and the understanding of the adult body plan in myriapods

Damen, Wim; Prpic, Nikola-Michael; Janssen, Ralf

Ingår i Soil Organisms, s. 337-346, 2009

The hatching larva of the priapulid worm Halicryptus spinulosus

Janssen, Ralf; Wennberg, Sofia A.; Budd, Graham E.

Ingår i Frontiers in Zoology, 2009

• DOI för The hatching larva of the priapulid worm Halicryptus spinulosus
• Ladda ner fulltext (pdf) av The hatching larva of the priapulid worm Halicryptus spinulosus

Hatching and earliest larval stages of the priapulid worm Priapulus caudatus

Wennberg, Sofia A.; Janssen, Ralf; Budd, Graham E.

Ingår i Invertebrate biology., s. 157-171, 2009

• DOI för Hatching and earliest larval stages of the priapulid worm Priapulus caudatus

Early embryonic development of the priapulid worm Priapulus caudatus

Wennberg, Sofia; Janssen, Ralf; Budd, Graham E.

Ingår i Evolution & Development, s. 326-338, 2008

• DOI för Early embryonic development of the priapulid worm Priapulus caudatus
• Ladda ner fulltext (pdf) av Early embryonic development of the priapulid worm Priapulus caudatus

Evidence for Wg-independent tergite boundary formation in the millipede Glomeris marginata

Janssen, Ralf; Budd, Graham E.; Damen, Wim G. M.; Prpic, Nikola-Michael

Ingår i Development, Genes and Evolution, s. 361-370, 2008

• DOI för Evidence for Wg-independent tergite boundary formation in the millipede Glomeris marginata

Diverged and conserved aspects of heart formation in a spider

Janssen, Ralf; Damen, Wim G. M.

Ingår i Evolution & Development, s. 155-165, 2008

• DOI för Diverged and conserved aspects of heart formation in a spider

The T-box genes H15 and optomotor-blind in the spiders Cupiennius salei, Tegenaria atrica and Achaearanea tepidariorum and the dorsoventral axis of arthropod appendages

Janssen, Ralf; Feitosa, Natalia M.; Damen, Wim G. M.; Prpic, Nikola-Michael

Ingår i Evolution & Development, s. 143-154, 2008

• DOI för The T-box genes H15 and optomotor-blind in the spiders Cupiennius salei, Tegenaria atrica and Achaearanea tepidariorum and the dorsoventral axis of arthropod appendages
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A review of the correlation of tergites, sternites, and leg pairs in diplopods

Janssen, Ralf; Prpic, Nicola-Michael; Damen, Wim G.M.

Ingår i Frontiers in Zoology, 2006

• DOI för A review of the correlation of tergites, sternites, and leg pairs in diplopods
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The ten Hox genes of the millipede Glomeris marginata

Janssen, Ralf; Damen, Wim G.M.

Ingår i Development, Genes and Evolution, s. 451-465, 2006

• DOI för The ten Hox genes of the millipede Glomeris marginata

Dorso-ventral differences in gene expression in Glomeris marginata Villers, 1789 (Myriapoda: Diplopoda)

Janssen, Ralf; Prpic, Nicola-Michael; Damen, Wim. G.M.

Ingår i Norwegian Journal of Entomology, s. 129-137, 2006

• Ladda ner fulltext (pdf) av Dorso-ventral differences in gene expression in Glomeris marginata Villers, 1789 (Myriapoda: Diplopoda)

Evolution of dorsal–ventral axis formation in arthropod appendages: H15 and optomotor-blind/bifid-type T-box genes in the millipede Glomeris marginata (Myriapoda: Diplopoda)

Prpic, Nikola-Michael; Janssen, Ralf; Damen, Wim; Tautz, Diethard

Ingår i Evolution & Development, s. 51-57, 2005

• DOI för Evolution of dorsal–ventral axis formation in arthropod appendages: H15 and optomotor-blind/bifid-type T-box genes in the millipede Glomeris marginata (Myriapoda: Diplopoda)

Pair rule gene orthologs in spider segmentation

Damen, Wim; Janssen, Ralf; Prpic, Nikola-Michael

Ingår i Evolution & Development, s. 618-628, 2005

• DOI för Pair rule gene orthologs in spider segmentation

Gene expression suggests decoupled dorsal and ventral segmentation in the millipede Glomeris marginata (Myriapoda: Diplopoda)

Janssen, Ralf; Prpic, Nikola-Michael; Damen, Wim

Ingår i Developmental Biology, s. 89-104, 2004

• DOI för Gene expression suggests decoupled dorsal and ventral segmentation in the millipede Glomeris marginata (Myriapoda: Diplopoda)
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Gene expression in spider appendages reveals reversal of exd/hth spatial specificity, altered leg gap gene dynamics, and suggests divergent distal morphogen signaling

Prpic, Nikola-Michael; Janssen, Ralf; Wigand, Barbara; Klingler, Martin et al.

Ingår i Developmental Biology, s. 119-140, 2003

Hox genes in spiders: Their significance for development and evolution

Turetzek, Natascha; Pechmann, Matthias; Janssen, Ralf; Prpic, Nikola-Michael

Ingår i Seminars in Cell and Developmental Biology, s. 24-34, 2024

• DOI för Hox genes in spiders: Their significance for development and evolution

Review of extra-embryonic tissues in the closest arthropod relatives, onychophorans and tardigrades

Treffkorn, Sandra; Mayer, Georg; Janssen, Ralf

Ingår i Philosophical Transactions of the Royal Society of London. Biological Sciences, 2022

• DOI för Review of extra-embryonic tissues in the closest arthropod relatives, onychophorans and tardigrades

Origin and evolution of the panarthropod head: A palaeobiological and developmental perspective

Ortega-Hernandez, Javier; Janssen, Ralf; Budd, Graham E.

Ingår i Arthropod structure & development, s. 354-379, 2017

• DOI för Origin and evolution of the panarthropod head: A palaeobiological and developmental perspective

A simple dissociation protocol for single-cell RNA sequencing of spider embryos

Jimenez, Brenda Irene Medina; Janssen, Ralf

Single-cell sequencing reveals novel insights into spider eye development

Medina-Jiménez, Brenda I.; Budd, Graham E.; Pechmann, Matthias; Posnien, Nico et al.