作者: Kerstin Orrhage , Carl Erik Nord
DOI: 10.1007/978-1-59259-711-6_4
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摘要: The human gastrointestinal microflora is, under normal circumstances, a stable ecosystem where the microorganisms remain relatively constant, although there are certain interpersonal variations. role of is still poorly understood, but one most important functions indigenous seems to be maintain colonization resistance against new as well protection overgrowth potentially pathogenic already present (1). This probably achieved by competition for nutrients and attachment sites, production inhibiting substances.