title: Modulation of in vivo immune responses by enkephalins.
mesh_terms: D000818:Animals; D000917:Antibody Formation / Q000187:drug effects*; D004743:Enkephalin, Leucine / Q000494:pharmacology*; D004744:Enkephalin, Methionine / Q000494:pharmacology*; D051379:Mice; D008807:Mice, Inbred BALB C; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D004744:Enkephalin, Methionine; D004743:Enkephalin, Leucine