Endorphins and enkephalins.
D000818:Animals; D001775:Blood Circulation; D001833:Body Temperature Regulation; D001923:Brain Chemistry; D002415:Cats; D005405:D-Ala(2),MePhe(4),Met(0)-ol-enkephalin; D004644:Emotions / Q000502:physiology; D004723:Endorphins / Q000032:analysis / Q000502:physiology; D004745:Enkephalins / Q000032:analysis / Q000502:physiology / Q000627:therapeutic use; D006168:Guinea Pigs; D006801:Humans; D008297:Male; D051379:Mice; D009043:Motor Activity / Q000502:physiology; D010146:Pain / Q000503:physiopathology; D010902:Pituitary Gland / Q000032:analysis; D051381:Rats; D011957:Receptors, Opioid / Q000032:analysis; D012119:Respiration; D012559:Schizophrenia / Q000503:physiopathology
D004723:Endorphins; D004745:Enkephalins; D011957:Receptors, Opioid; D005405:D-Ala(2),MePhe(4),Met(0)-ol-enkephalin