title: The fine structure of secretory granules in submandibular glands of the rat during early postnatal development.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D004721:Endoplasmic Reticulum; D006056:Golgi Apparatus; D008854:Microscopy, Electron; D051381:Rats / Q000033:anatomy & histology*; D012270:Ribosomes; D013363:Submandibular Gland / Q000166:cytology* / Q000378:metabolism