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sars-cov-2

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What is the adaptive immune system? The adaptive immune system has specialized cells that work together to identify, neutralize, and remember invading germs. Unlike the non-specific response of the innate immune system, the adaptive immune system provides a targeted defense.…

“Like a lock and key” — this is the description of how viruses can get into our cells. Viruses use special proteins on their surface to enter cells. They do this because they need our cells to reproduce. But viruses…