Am Pharmapark 1 article published in JoVE Immunology and Infection Analysis of Iophenoxic Acid Analogues in Small Indian Mongoose (Herpestes Auropunctatus) Sera for Use as an Oral Rabies Vaccination Biological Marker Are R. Berentsen1, Robert T. Sugihara1, Cynthia G. Payne1, Israel Leinbach1, Steven F. Volker1, Ad Vos2, Steffen Ortmann2, Amy T. Gilbert1 1US Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, National Wildlife Research Center, 2IDT Biologika GmbH, Am Pharmapark We offered captive mongooses placebo oral rabies vaccine baits with ethyl or methyl iophenoxic acid as a biomarker and verified bait uptake using a novel liquid chromatography with tandem mass spectrometry (LC-MS/MS) method.