title: Morphological study of the functional cycle of the secretory cells of the upper respiratory tract epithelium of amphibians and reptiles.
mesh_terms: D000663:Amphibians / Q000033:anatomy & histology*; D000818:Animals; D004848:Epithelium / Q000648:ultrastructure; D012104:Reptiles / Q000033:anatomy & histology*; D012137:Respiratory System / Q000648:ultrastructure*