title: Changes in the pituitary and hypothalamic content of methionine-enkephalin during the estrous cycle of rats.
mesh_terms: D000818:Animals; D001667:Binding, Competitive; D001681:Biological Assay; D004723:Endorphins / Q000378:metabolism*; D004745:Enkephalins / Q000378:metabolism*; D004971:Estrus; D005260:Female; D007031:Hypothalamus / Q000378:metabolism*; D010455:Peptides / Q000494:pharmacology; D010902:Pituitary Gland / Q000378:metabolism*; D011247:Pregnancy; D011863:Radioimmunoassay; D051381:Rats
chemical_list: D004723:Endorphins; D004745:Enkephalins; D010455:Peptides