title: Neural crest and placodes. Preface.
authors: Paul A
authors: PA
authors: Trainor
mesh_terms: D000818:Animals; D005075:Biological Evolution; D002454:Cell Differentiation / Q000502:physiology*; D004475:Ectoderm / Q000196:embryology*; D006801:Humans; D009432:Neural Crest / Q000196:embryology*; D014714:Vertebrates / Q000196:embryology*