TY - RPRT TI - Simultaneous changes in hypothalamic catecholamine levels and plasma corticosterone concentration in the rat after acute morphine and during tolerance. AU - M V Milanés AU - M M Puig AU - M L Vargas PY - 1993 DO - 10.1016/0143-4179(93)90016-4 UR - https://pubmed.ncbi.nlm.nih.gov/8327071/ ID - 8327071 ER -