title: Properties of the primary organization field in the embryo of Xenopus laevis. 3. Retention of polarity in cell groups excised from the region of the early organizer.
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D002465:Cell Movement; D002478:Cells, Cultured; D005314:Embryonic and Fetal Development; D066298:In Vitro Techniques; D007814:Larva; D008648:Mesoderm; D014981:Xenopus / Q000196:embryology*