@article {Hoffmaster, author = {Keith A. Hoffmaster and Maciej J. Zamek-Gliszczynski and Gary M. Pollack and Kim L.R. Brouwer}, title = {Multiple Transport Systems Mediate the Hepatic Uptake and Biliary Excretion of the Metabolically Stable Opioid Peptide [D-penicillamine2,5]enkephalin}, year = {2004}, doi = {10.1124/dmd.104.001420}, publisher = {American Society for Pharmacology and Experimental Therapeutics}, issn = {0090-9556}, URL = {https://dmd.aspetjournals.org/content/early/2004/11/04/dmd.104.001420}, eprint = {https://dmd.aspetjournals.org/content/early/2004/11/04/dmd.104.001420.full.pdf}, journal = {Drug Metabolism and Disposition} }