This paper focused on development and evaluation of anti-μ chain IgM ELISA and indirect ELISA for IgG antibodies against hepatitis E virus(HEV).Prokaryotic expressed polymerized recombinant HEV protein NE2 was used as antigen to develop two ELISA methods for anti-HEV IgM(E2-IgM)or IgG(E2-IgG)detection.Serial serum samples of twenty-nine HEV experimentally infected Rhesus monkeys were used to understand the dynamics of anti-HEV IgM and IgG detected by E2-IgM or E2-IgG as well as IgG detected by a generally u...