One of the packaging cell lines was positive for mycoplasma.No RCR was detected in all of the packaging cell lines.

• 结果 在所建立的靶基因包装细胞系中，无菌试验均为阴性，一株包装细胞支原体呈阳性，全部包装细胞系未测到可复制性逆转录病毒。