The barrier that will act on the bacteria is biological barrier.
The immune system's 3 strains of protection consist of bodily and chemical barriers, non-unique innate responses, and unique adaptive responses. The innate immune machine is the body's first line of protection towards germs coming into the body. It responds withinside the equal manner to all germs and overseas substances, that is why it's far every now and then called the "nonspecific" immune system.
Skin is a barrier that serves as one of the body's first strains of protection towards dangerous microbes.
Thus, the barrier that will act on the bacteria is biological barrier.
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