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Unformatted text preview: granzymes (which degrade cell proteins) to kill the infected host cell. Case 2: Tc cells encounters an infected host cell (does not necessarily have to be an APC) Case 1: TH cell encounters an antigen presenting cell (APC) displaying an antigen 1. Nave T-cell interacts with APC and is activated 2. T-cell proliferates into memory helper T-cells and T-helper cells 3. T-helper cells begin to secrete cytokines to activate macrophages, B-cells, and other immunological cells. Typical response for bacterial infections Typical response for viral infections...
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- Fall '07