title: Endorphins in several regions of rat brain: large differences between radioimmunoassay and radioreceptor assay.
mesh_terms: D000818:Animals; D001923:Brain Chemistry; D004723:Endorphins / Q000032:analysis*; D008722:Methods; D011863:Radioimmunoassay; D011869:Radioligand Assay; D051381:Rats
chemical_list: D004723:Endorphins