Question

Factors that determine microbial flora in human

Answer 1

1. Microbial ecology of dental plaque,and enhances murine and human intestinal epithelial barrier

Answer 2

A diverse microbial flora is associated with the skin and mucous membranes of every human being from shortly after birth until death. The human body, which contains about 1013cells, routinely harbors about 1014bacteria.This bacterial population constitutes thenormal microbial flora. The normal microbial flora is relatively stable, with specific genera populating various body regions during particular periods in an individual's life. Microorganisms of the normalflora may aid the host (by competing for microenvironments more effectively than such pathogens asSalmonellaspp or by producing nutrients the host can use), may harm the host (by causing dental caries, abscesses, or other infectious diseases), or may exist as commensals (inhabiting the host for long periodswithout causing detectable harm or benefit). Eventhough most elements of the normal microbial flora inhabiting the human skin, nails, eyes, oropharynx, genitalia, and gastrointestinal tract are harmless in healthy individuals, these organisms frequently cause disease in compromised hosts. Viruses and parasites are not considered members of the normal microbial flora by most investigators because they are not commensals and do not aid the host.

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