title: Ultrastructural evidence for two types of gonadotropic cells in the pituitary gland of the male three-spined stickleback, Gasterosteus aculeatus.
mesh_terms: D000818:Animals; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D005399:Fishes / Q000033:anatomy & histology*; D006065:Gonadotropins, Pituitary / Q000378:metabolism; D008297:Male; D010902:Pituitary Gland / Q000166:cytology* / Q000378:metabolism / Q000648:ultrastructure
chemical_list: D006065:Gonadotropins, Pituitary