Effect of cell number on the type and stability of differentiation in amphibian ectoderm.
D000818:Animals; D002449:Cell Aggregation; D002452:Cell Count; D002454:Cell Differentiation; D046508:Culture Techniques; D004475:Ectoderm / Q000166:cytology*; D009420:Nervous System / Q000196:embryology*; D014562:Caudata / Q000196:embryology*