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【多选题】
(2019· 扬州一模 ) 人绒毛膜促性腺激素 (HCG) 是女性怀孕后胎盘滋养层细胞分泌的一种糖蛋白,制备抗 HCG 单克隆抗体可用于早孕的诊 断。下图是抗 HCG 单克隆抗体制备流程示意图,下列有关说法错误的是 ( )
A.
① 过程常用灭活的病毒，不可用聚乙二醇
B.
② 过程筛选出的杂交瘤细胞都能产生抗 HCG 抗体
C.
③ 过程以抗 HCG 单克隆抗体为抗原进行检测
D.
④ 过程需要添加抗生素等物质，以防止病毒污染
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All filesystems in rootvg, vol1, vol2
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C.
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