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Those are all organs that are directly exposed to outside materials. For the more internal organs, bacteria would have to travel across a skin of digestive tra
by BurningFrog 2y ago
Those are all organs that are directly exposed to outside materials.
For the more internal organs, bacteria would have to travel across a skin of digestive tract barrier.
Unless they're present in the womb as the fetus starts growing, I guess.
- askvictor 2y agoIndeed, those organs expose to the outside world have reason to cultivate friendly bacteria for no other reason than to take up space, to stop hostile bacteria having a place to take hold.