title: First-pass effect of nalorphine in rats.
mesh_terms: D000284:Administration, Oral; D000818:Animals; D001682:Biological Availability; D005965:Glucuronates / Q000096:biosynthesis; D007275:Injections, Intravenous; D007421:Intestine, Small / Q000378:metabolism; D007700:Kinetics; D008099:Liver / Q000378:metabolism; D008297:Male; D009020:Morphine / Q000378:metabolism; D009269:Nalorphine / Q000008:administration & dosage / Q000378:metabolism*; D051381:Rats
chemical_list: D005965:Glucuronates; D009020:Morphine; D009269:Nalorphine