The researchers have been working with relatives of the sars virus - - one that causes the common cold in people and another that causes diarrhea in pigs 研究者已经对非典病毒的同类家族病毒进行了研究。其中一种是引起人类普通感冒的病毒，另一种是引起猪类痢疾的病毒。
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The researchers have been working with relatives of the sars virus - one that causes the common cold in people and another that causes diarrhea in pigs 研究者已经对非典病毒的同类家族病毒进行了研究。其中一种是引起人类普通感冒的病毒，另一种是引起猪类痢疾的病毒。
