title: Ribonucleic acid and learning in old rats.
mesh_terms: D000367:Age Factors; D000818:Animals; D002540:Cerebral Cortex / Q000378:metabolism; D003214:Conditioning, Classical / Q000187:drug effects; D006624:Hippocampus / Q000378:metabolism; D007858:Learning / Q000187:drug effects*; D009474:Neurons / Q000378:metabolism; D011689:Purkinje Cells / Q000378:metabolism; D012313:RNA / Q000378:metabolism / Q000494:pharmacology*; D051381:Rats
chemical_list: D012313:RNA