title: Peptides in body fluids in pain.
mesh_terms: D000698:Analgesia; D001826:Body Fluids / Q000032:analysis*; D004723:Endorphins / Q000032:analysis; D006801:Humans; D009479:Neuropeptides / Q000032:analysis*; D010146:Pain / Q000503:physiopathology*; D013312:Stress, Physiological / Q000503:physiopathology
chemical_list: D004723:Endorphins; D009479:Neuropeptides