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缺陷病毒（ｄｅｆｅｃｔｉｖｅｖｉｒｕｓ）：这也是病毒异常增殖的一种表现，它是由于病毒基因不完整或者基因位点改变，因而使病毒不能合成其必需的某些蛋白质、不能复制出完整的具有感染性的病毒体。这种缺陷病毒如果与一个能辅助其不足的辅助病毒（ｈｅｌｐｅｒｖｉｒ...
Defective virus: This is also a manifestation of an abnormal proliferation of a virus due to an incomplete or altered genetic locus of the virus, which renders the virus unable to synthesize some of the necessary proteins and can not replicate a complete infectious Virosomes. This defect virus and if it can assist its lack of helper virus (helpervir ...