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SPONSORED PAPERS
1. History Of The Cell Theory
 2. B Cells And T Cells
3. Lab Report Of The Cells
 4. Leukemia
5. Heart Cells
 6. Tumors
7. The Lymphatic System
 8. Information About Transgenic O...
9. Changes In The Atmosphere Caus...
 10. Cell Division

Beginning of Paper
B Cells and T Cells

The graph shows the response of the human immune system to the exposure of an antigen in two phases. The first phase is that of a primary response to the initial attack. The second response is very rapid, subsequent to attacks from the same antigen. The specificity of this ....

Middle of Paper
.... with eukaryotic cells. There are three types of T cells: helper T cells, suppressor T cells, and cytotoxic T cells. The T cell receptor (helper T cells) recognizes foreign antigens displayed on the surface of the body’s own cells. When the cytotoxic T cell encounters this, it differentiates into active cells that attack and lyse the infected cells. They also release powerful chemicals known as “killer cells.” In period II, the antigen is again injected, however the memory cells recognize it and they immediately begin to produce antibodies, preventing fu ....

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