title: Ontogenesis of enkephalinergic systems in rat brain: post-natal changes in enkephalin levels, receptors and degrading enzyme activities.
mesh_terms: D000818:Animals; D001711:Biotransformation; D001921:Brain / Q000201:enzymology / Q000254:growth & development / Q000502:physiology*; D004723:Endorphins / Q000502:physiology*; D004745:Enkephalins / Q000378:metabolism / Q000502:physiology*; D066298:In Vitro Techniques; D007700:Kinetics; D009419:Nerve Tissue Proteins / Q000378:metabolism; D009474:Neurons / Q000378:metabolism; D051381:Rats; D011957:Receptors, Opioid / Q000502:physiology
chemical_list: D004723:Endorphins; D004745:Enkephalins; D009419:Nerve Tissue Proteins; D011957:Receptors, Opioid