RT Journal Article SR Electronic T1 Mechanisms of cellular adaptive sensitivity changes: applications to opioid tolerance and dependence. JF Pharmacological Reviews JO Pharmacol Rev FD American Society for Pharmacology and Experimental Therapeutics SP 435 OP 488 VO 41 IS 4 A1 S M Johnson A1 W W Fleming YR 1989 UL http://pharmrev.aspetjournals.org/content/41/4/435.abstract AB