a new , highly selective radio-iodinated oxytocin receptor antagonist [ ( 1- ( beta-mercapto-beta , beta-cyclopentamethylenepropionic acid , 2-o-methyltyrosine , 4-threonine , 8-ornithine , 9-tyrosylamide ] -vasotocin ) was used to identify and quantitate specific binding sites for the neurohypophyseal hormone oxytocin with in vitro incubation of rat brain sections and autoradiography .
C0042418
vasotocin
C0032017
neurohypophyseal