METHODS BALB/c mice were immunized with HAV NJ 3 strain from cell culture, then lymphocytes from the splenic tissues of the mice were fused with Sp2/0 myeloma cell screening with IFA, limiting dilution technique and expanded into larger cell populations.

• 方法 :用已培养的 NJ-3株甲肝病毒 (HAV)免疫 BALB/c小鼠 ,经细胞融合技术、IFA筛选和有限稀释克隆法。