The sera of 202 patients with different types of HBV infection were assayed for PreS2 proteins(PreS2)and Anti-PreS2 antibody (anti-PreS2) by ELISA.

• 本文用酶联免疫法(ELISA)对202例各类乙型肝炎病毒(HBV)感染者血清前S2蛋白(PreS2)和前S2抗体(抗PreS2)进行了检测。