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Biology, 15.04.2020 21:39 nalisas8329

Which one of the following statements about the immune system is true? A. Recombination of genes to produce functional B-cell receptors occurs immediately after exposure to antigen. B. Helper T-cells bind to type I MHC proteins and cytotoxic T-cells bind to type II MHC proteins. C. The major histocompatibility complex codes for a large group of cell surface glycoproteins. D. Plasma cells secrete IgM molecules early, and then IgD molecules later. E. Interferons specifically protect body cells against attack by parasites.

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Which one of the following statements about the immune system is true? A. Recombination of genes to...

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