About the Authors

Malcolm Fisher

Contributed equally to this work with: Malcolm Fisher, Helen Downie, Monique C. M. Welten

Current address: Department of Genetics and Genomics, The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Midlothian, United Kingdom

Affiliation Division of Cell and Developmental Biology, University of Dundee, Dundee, Scotland, United Kingdom

Helen Downie

Contributed equally to this work with: Malcolm Fisher, Helen Downie, Monique C. M. Welten

Current address: SCRI, Invergowrie, Dundee, Scotland, United Kingdom

Affiliation Department of Biology & Biochemistry, University of Bath, Claverton Down, Bath, United Kingdom

Monique C. M. Welten

Contributed equally to this work with: Malcolm Fisher, Helen Downie, Monique C. M. Welten

mcmw20@bath.ac.uk

Affiliation Department of Biology & Biochemistry, University of Bath, Claverton Down, Bath, United Kingdom

Irene Delgado

Current address: Instituto de Biomedicina y Biotecnología de Cantabria, Santander, Spain

Affiliation Department of Biology & Biochemistry, University of Bath, Claverton Down, Bath, United Kingdom

Andrew Bain

Current address: Department of Genetics and Genomics, The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Midlothian, United Kingdom

Affiliation Division of Cell and Developmental Biology, University of Dundee, Dundee, Scotland, United Kingdom

Thorsten Planzer

Affiliation Division of Cell and Developmental Biology, University of Dundee, Dundee, Scotland, United Kingdom

Adrian Sherman

Affiliation The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Midlothian, Scotland, United Kingdom

Helen Sang

Affiliation The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Midlothian, Scotland, United Kingdom

Cheryll Tickle

Affiliations Division of Cell and Developmental Biology, University of Dundee, Dundee, Scotland, United Kingdom, Department of Biology & Biochemistry, University of Bath, Claverton Down, Bath, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Provided the GFP chicken eggs: HS AS. Conceived and designed the experiments: CT MF HD MCMW ID. Performed the experiments: MF HD ID AB TP MCMW. Analyzed the data: MCMW MF HD CT. Contributed reagents/materials/analysis tools: AS HS. Wrote the paper: MF MCMW HD CT.