[Analgesic effect of morphine and dextropropoxyphene].
D000818:Animals; D002986:Clinical Trials as Topic; D011431:Dextropropoxyphene / Q000008:administration & dosage; D004341:Drug Evaluation; D007279:Injections, Subcutaneous; D008297:Male; D009020:Morphine / Q000008:administration & dosage; D051381:Rats
D009020:Morphine; D011431:Dextropropoxyphene
Efecto analgésico de la morfina y del dextropropoxifeno.