长期以来,研究艾滋病的专家们一直怀疑艾滋病病毒最初是来自猴子。不久之前,科研人员终于找到证据,证实艾滋病病毒最早出现在非洲的一种黑猩猩体内。一个国际科研小组今年2月初在《自然》杂志上发表了有关的论文。取得这项科研成果的是来自美国、英国和法国的科学家,他们运用遗传学的技术,从一只死于1985年的黑猩猩的身体组织中找到了一种病毒,这种病毒有四个变种。科学家发现,在这四个变种中有三个变种来自同一 For a long time, AIDS experts have always suspected that the AIDS virus was originally from a monkey. Not long ago, researchers finally found evidence that the AIDS virus first appeared in a chimpanzee in Africa. An international research group published a related paper in Nature in early February this year. The scientists who made the research come from the United States, Britain and France who used genetic techniques to find a virus from the body tissues of a chimpanzee who died in 1985, and the virus has four variants. Scientists have found that three of the four variants come from the same