由于先天性遗传突变或用人工方法造成一种或多种免疫系统组成成分缺陷的动物。
艾滋病病毒的灵长类动物版本被称为猴免疫缺陷病毒（SIV），但大多数感染此病毒的猿猴并没有显示任何疾病症状。
The primate version of the virus that causes AIDS is called simian immunodeficiency virus (SIV), but most apes and monkeys that are infected with it show no symptoms of illness.
一些其他类型的免疫缺陷病毒可以影响猫和其他灵长类动物，即猫科类免疫缺陷病毒(fip)和猿猴免疫缺损病毒(SIV)。
There are some other types of immunodeficiency viruses that specifically affect cats and other primates, namely the Feline immunodeficiency virus (FIV) and Simian immunodeficiency virus (SIV).
南韩科学家已经分离出在灵长类动物中发现的阻断猿人免疫缺陷病毒进展的蛋白的关键部位。
Scientists in South Korea have isolated the part of a protein found in primates that blocks the progression of human immunodeficiency virus in apes.
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