title: Ultrastructural changes in the pars distalis of the maturing male rat.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D002454:Cell Differentiation; D002477:Cells / Q000378:metabolism; D002923:Cilia; D003594:Cytoplasmic Granules; D006652:Histological Techniques; D008247:Lysosomes; D008297:Male; D008854:Microscopy, Electron; D010902:Pituitary Gland / Q000166:cytology*; D051381:Rats / Q000033:anatomy & histology* / Q000254:growth & development; D011919:Rats, Inbred Strains; D012270:Ribosomes