TY - JOUR AU - Hamon, M TI - International Union of Pharmacology. XII. Classification of opioid receptors. JF - Pharmacological reviews DA - 1997-03-19 UR - https://www.deepdyve.com/lp/pubmed/international-union-of-pharmacology-xii-classification-of-opioid-cycqhytkmd SP - 567 EP - 592 VL - 48 IS - 4 DP - DeepDyve ER -