title: Morphine analgesia in rats at various ages.
mesh_terms: D000367:Age Factors; D000698:Analgesia; D000818:Animals; D001702:Biopharmaceutics; D001835:Body Weight / Q000187:drug effects; D001921:Brain / Q000187:drug effects / Q000378:metabolism*; D002250:Carbon Radioisotopes; D003864:Depression, Chemical; D004305:Dose-Response Relationship, Drug; D005260:Female; D007279:Injections, Subcutaneous; D008297:Male; D008722:Methods; D009020:Morphine / Q000008:administration & dosage / Q000097:blood / Q000378:metabolism / Q000494:pharmacology*; D051381:Rats; D012677:Sensation / Q000187:drug effects; D013268:Stimulation, Chemical; D013997:Time Factors
chemical_list: D002250:Carbon Radioisotopes; D009020:Morphine