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Unformatted text preview: o The activated T cell releases cytokines (specifically Il-2 and Il-4) that, in addition to the contact signal, induce proliferation in the B cell In response to coming into contact with antigen, the B cells will secrete antibody, the first antibody that is secreted is IgM. This is also known as the primary response. 2a) Discuss the structure and function of the intestinal tissue, especially the M cell and how it contributes to host defenses? The gastrointestinal tract is among the most vulnerable membrane surfaces in the body as is one of the major sites at which pathogens enter body tissues. +...
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- Spring '07