title: Opioids: after thousands of years, still getting to know you.
authors: Analgesic Research, Needham, MA 02494, USA. nkatz@analgesicresearch.com
authors: Nathaniel
authors: N
authors: Katz
mesh_terms: D000701:Analgesics, Opioid / Q000266:history / Q000494:pharmacology / Q000627:therapeutic use; D000818:Animals; D049690:History, Ancient; D006801:Humans; D009293:Opioid-Related Disorders; D010146:Pain / Q000188:drug therapy*
chemical_list: D000701:Analgesics, Opioid