A toolkit for mapping cell identities in relation to neighbors reveals conserved patterning of neuromesodermal progenitor populations.

Acknowledgements: We are grateful to Sophie Brumm and members of the Lowell, Wilson and Blin labs and to Linus Schumacher for helpful suggestions. We thank facility staff at the Institute for Regeneration and Repair of the University of Edinburgh, especially Justyna Cholewa-Waclaw at the High-Content Screening Facility, Matthieu Vermeren at the Imaging Facility, and Theresa O’Connor at the Tissue Culture Facility.