title: Twenty-four-hour changes of plasmatic level of beta-endorphin-like substances in healthy humans. (Preliminary report).
mesh_terms: D000906:Antibodies / Q000276:immunology; D002940:Circadian Rhythm; D003429:Cross Reactions; D004723:Endorphins / Q000097:blood* / Q000276:immunology; D006801:Humans; D010949:Plasma / Q000032:analysis; D001615:beta-Endorphin; D008083:beta-Lipotropin / Q000276:immunology
chemical_list: D000906:Antibodies; D004723:Endorphins; D001615:beta-Endorphin; D008083:beta-Lipotropin