Research & Education JFS Articles AAFS Connect Conference Proceedings Reference Series Library International Educational Outreach Program The Persistence of 3-Methylfentanyl (3-MF) in Pennsylvania Presenting section: Toxicology 2020 Papsun, Donna M., Horsham PA; Fogarty, Melissa, Willow Grove PA; Kacinko, Sherri L., Horsham PA; Logan, Barry K., Horsham PA View the paper Toxicology