CD40LG and viral hepatitis: The patient's initial laboratory results are shown in Table 1, and her viral hepatitis serology results were as follows: anti-hepatitis A virus (anti-HAV) (IgM), negative; anti-hepatitis B virus (anti-HBV), negative; anti-HBc (IgM), negative; anti-hepatitis C virus (anti-HCV), negative; and HBsAg, positive.