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动物体表及体内存在的正常微生物菌群与其宿主的关系是微生物与其宿主在长期进化过程中形成的。这些菌群对其宿主不仅无害，而且是有益和必要的，因而引起了科学界的重视。微生态学（Ｍｉｃｒｏｅｃｏｌｏｇｙ）就是研究这些微生物菌群与其宿主之间的相互关系的边缘学科。...
The relationship between the body surface and the normal microbial flora present in the body and its host is the formation of microorganisms and their hosts during long-term evolution. These flora are not only harmless to their hosts, but also beneficial and necessary, and have drawn the attention of the scientific community. Microecology is the fringe discipline that studies the interrelationships between these microbial flora and their hosts. ...