TY - JOUR T1 - International Union of Pharmacology. XIX. The IUPHAR Receptor Code: A Proposal for an Alphanumeric Classification System JF - Pharmacological Reviews JO - Pharmacol Rev SP - 271 LP - 278 VL - 50 IS - 2 AU - P. P. A. Humphrey AU - E. A. Barnard Y1 - 1998/06/01 UR - http://pharmrev.aspetjournals.org/content/50/2/271.abstract N2 - ER -