title: An in situ study of the hypothalamic neurosecretory system of some teleostean fishes.
mesh_terms: D000818:Animals; D001369:Axons / Q000648:ultrastructure; D003530:Cyprinidae / Q000033:anatomy & histology*; D007030:Hypothalamo-Hypophyseal System / Q000033:anatomy & histology* / Q000648:ultrastructure; D007031:Hypothalamus / Q000648:ultrastructure; D008867:Microtomy; D013194:Staining and Labeling