肖海姆说，一些病毒在其宿主产生了抵抗力时，也许已经进化出许多另类病毒蛰伏于冰中。
Many other viruses may have evolved to lay dormant in ice when their host populations develop resistance, says Shoham.
研究人员说，XMRV属于多个不同的MLV类病毒。
XMRV is among several different members of the MLV family, researchers said.
比如说，如果一只蝙蝠被发现携带有大量此类病毒，则预示着病毒传染给人类的潜在几率也很高。
For example, if a bat carries a high load of the virus, it indicates that the potential for transmission to humans is also high.
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