Fentanyl conjugate vaccine by injected or mucosal delivery with dmLT or LTA1 adjuvants implicates IgA in protection from drug challenge. - Stone AE; Scheuermann SE; Haile CN; Cuny GD; Velasquez ML; Linhuber JP; Duddupudi AL; Vigliaturo JR; Pravetoni M; Kosten TA; Kosten TR; Norton EB (NPJ vaccines, 2021)