Morphology of the developing down feathers of chick embryos. A descriptive study at the ultrastructural level of differentiation and keratinization.
D000818:Animals; D001485:Basement Membrane; D002454:Cell Differentiation; D002462:Cell Membrane; D002467:Cell Nucleus; D002642:Chick Embryo / Q000033:anatomy & histology / Q000254:growth & development*; D003094:Collagen / Q000032:analysis; D004721:Endoplasmic Reticulum; D004847:Epithelial Cells; D005241:Feathers / Q000033:anatomy & histology / Q000196:embryology*; D006003:Glycogen / Q000032:analysis; D006056:Golgi Apparatus; D007633:Keratins / Q000096:biosynthesis*; D008544:Melanocytes; D008854:Microscopy, Electron; D012270:Ribosomes / Q000378:metabolism
D007633:Keratins; D006003:Glycogen; D003094:Collagen