Plasma cholinesterase and the morphine receptor.
D000494:Allosteric Regulation; D002091:Butyrylcholinesterase / Q000097:blood*; D002802:Cholinesterases / Q000097:blood*; D009020:Morphine / Q000378:metabolism*; D011955:Receptors, Drug; D013268:Stimulation, Chemical
D011955:Receptors, Drug; D009020:Morphine; D002091:Butyrylcholinesterase; D002802:Cholinesterases