Biology questions (normal flora)?

1. Effects of loss of normal flora are....

2. places normal flora isn't found ( sterile body sites) are .....

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    1.) The effects on the lack of normal flora are:

    - vitamin deficiencies, especially vitamin K and vitamin B12

    - increased susceptibility to infectious disease

    - poorly developed immune system, especially in the gastrointestinal tract

    - lack of "natural antibody" or natural immunity to bacterial infection

    Because these conditions in germ-free mice and hamsters do not occur in conventional animals, or are alleviated by introduction of a bacterial flora (at the appropriate time of development), it is tempting to conclude that the human normal flora make similar contributions to human nutrition, health and development.


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