title: Immunocytochemical investigation of the hypothalamo-neurohypophysial system in birds.
abstract: The results of an immunohistochemical investigation of the hypothalamo-neurohypophysial system in several species of birds have shown that: (1) mesotocin and vasotocin are synthesized in separate neurons; (2) in all species investigated the distribution of mesotocinergic and vasotocinergic perikarya follows a common pattern; (3) the external zone of the avian anterior median eminence contains exclusively vasotocinergic nerve fibers, originating in supraoptic and ventral paraventricular regions; (4) the distribution of immunoreactive elements in the neural lobe shows a definite species-dependent pattern.
mesh_terms: D000818:Animals; D001717:Birds / Q000033:anatomy & histology*; D010856:Columbidae; D003370:Coturnix; D004372:Ducks; D007030:Hypothalamo-Hypophyseal System / Q000166:cytology*; D008473:Median Eminence; D009474:Neurons; D013045:Species Specificity; D014668:Vasotocin / Q000096:biosynthesis
chemical_list: D014668:Vasotocin