Investigation of the relationship between some brain peptides and neurotransmitters.
D000818:Animals; D001921:Brain / Q000187:drug effects*; D004357:Drug Synergism; D007980:Levodopa / Q000008:administration & dosage*; D009075:MSH Release-Inhibiting Hormone / Q000008:administration & dosage*; D051381:Rats; D011919:Rats, Inbred Strains; D011954:Receptors, Dopamine / Q000187:drug effects*
D011954:Receptors, Dopamine; D007980:Levodopa; D009075:MSH Release-Inhibiting Hormone