title: Assay of endogenous opiate receptor ligands in human CSF and plasma.
mesh_terms: D000818:Animals; D002850:Chromatography, Gel; D004723:Endorphins / Q000378:metabolism; D006801:Humans; D008024:Ligands; D008297:Male; D011869:Radioligand Assay; D051381:Rats; D011919:Rats, Inbred Strains; D011957:Receptors, Opioid / Q000032:analysis*; D001615:beta-Endorphin
chemical_list: D004723:Endorphins; D008024:Ligands; D011957:Receptors, Opioid; D001615:beta-Endorphin