Current status of RIA methods for the analysis of enkephalins and endorphins.
D000818:Animals; D004723:Endorphins / Q000032:analysis*; D004745:Enkephalins / Q000032:analysis* / Q000097:blood / Q000134:cerebrospinal fluid; D006801:Humans; D007106:Immune Sera; D011863:Radioimmunoassay / Q000379:methods
D004723:Endorphins; D004745:Enkephalins; D007106:Immune Sera