title: A chronic intravenous cannulation technique adapted for behavioral studies.
mesh_terms: D000818:Animals; D001522:Behavior, Animal; D001800:Blood Specimen Collection / Q000295:instrumentation; D002404:Catheterization / Q000295:instrumentation*; D002940:Circadian Rhythm; D004971:Estrus; D005260:Female; D008722:Methods; D011247:Pregnancy; D011388:Prolactin / Q000097:blood; D011863:Radioimmunoassay; D051381:Rats; D013997:Time Factors
chemical_list: D011388:Prolactin