To test whether candidate epitopes induced drug-induced hepatitis and CYP2E1 antibodies, we immunized BALB/c mice with complete Freund’s adjuvant (CFA) ± JHDN-5 or JHDN-1 emulsified in CFA on days 0 and 7, as previously described (3). Here, CYP2E1 is linked to hepatitis A virus infection.