title: Effects of thyroxine, vitamin A and HeLa cells on differentiation of aggregates of dissociated embryonic chick skin cells in vitro.
mesh_terms: D000818:Animals; D002449:Cell Aggregation / Q000187:drug effects*; D002454:Cell Differentiation / Q000187:drug effects*; D002642:Chick Embryo / Q000187:drug effects; D006367:HeLa Cells; D007633:Keratins / Q000096:biosynthesis; D008853:Microscopy; D012867:Skin / Q000196:embryology; D013974:Thyroxine / Q000494:pharmacology*; D014801:Vitamin A / Q000494:pharmacology*
chemical_list: D014801:Vitamin A; D007633:Keratins; D013974:Thyroxine