How are bacteria kept out of your alimentary canal and lung?​

Bacteria in the lungs may play a major role in disease — and health. Researchers have just mapped where the bacteria are and how they arrived, paving the way for more discoveries about the lung microbiome.

Explanation:

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step 1: replication fork formation.

step 2: primer binding.

step 3: elongation.

step 4: termination.

explanation:

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really dont know just need some points