Electron microscopic observations on the contribution of the ultimobranchial bodies to thyroid histogenesis in the rat.
D000818:Animals; D001934:Branchial Region / Q000166:cytology*; D002454:Cell Differentiation; D005865:Gestational Age; D008722:Methods; D008854:Microscopy, Electron; D051381:Rats / Q000033:anatomy & histology*; D011919:Rats, Inbred Strains; D013961:Thyroid Gland / Q000166:cytology / Q000196:embryology*