title: Factor from rat small intestine potently affects opiate receptor binding.
mesh_terms: D000818:Animals; D001921:Brain / Q000378:metabolism; D004533:Egtazic Acid / Q000494:pharmacology; D005048:Etorphine / Q000378:metabolism; D006168:Guinea Pigs; D007421:Intestine, Small / Q000032:analysis*; D007700:Kinetics; D008297:Male; D051381:Rats; D011957:Receptors, Opioid / Q000187:drug effects* / Q000378:metabolism; D014020:Tissue Extracts / Q000494:pharmacology*; D014360:Trypsin Inhibitor, Kunitz Soybean / Q000378:metabolism
chemical_list: D011957:Receptors, Opioid; D014020:Tissue Extracts; D005048:Etorphine; D004533:Egtazic Acid; D014360:Trypsin Inhibitor, Kunitz Soybean