Contingent administration of typical and biased kappa opioid agonists reduces cocaine and oxycodone choice in a drug vs. food choice procedure in male rhesus monkeys. - Zamarripa, C. Austin; Huskinson, Sally L.; Townsend, E. Andrew; Prisinzano, Thomas E.; Blough, Bruce E.; Rowlett, James K.; Freeman, Kevin B. (Psychopharmacology, 2024)