The coronavirus SARS-CoV-2 infects epithelial lung cells. When it infects a person for the first time, it invades lung cells and begins to reproduce exponentially. What is the next step required to provoke an immune response?-B cells are activated to divide & make antibodies that bind to circulating SARS-CoV-2 particles.-Helper T cells are activated to divide & secrete immune signaling molecules-Cells process and present viral protein fragments on MHC molecules-Cytotoxic T cells kill SARS-CoV-2-infected cells

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