SRP225789 PRJNA577709 GSE138903 Bulk RNA-seq of mouse embryonic progenitor cells Population RNA-Seq analysis shows distinct gene expression profiles in specification of Nkx2-1+ endodermal and ectodermal populations Overall design: Breeding cages were set up with one male and three female mice and the morning of the day a vaginal plug was detected was defined as embryonic day E0.5. Foregut endoderm and ectoderm cells were isolated from E8.25 embryos, forebrain and lung cells were isolated from E9.0 embryos and thyroid cells were isolated from E13.5 embryos GSE138903 pubmed 32005814