TY - RPRT TI - beta-endorphin is a potent analgesic agent. AU - H H Loh AU - L F Tseng AU - E Wei AU - C H Li PY - 1976 DO - 10.1073/pnas.73.8.2895 UR - https://pubmed.ncbi.nlm.nih.gov/8780/ ID - 8780 ER -