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Immunity (Adaptive defenses of the T-Lymphocytes (T-Cells education…

- - - - is the first 2 tests a developing T- lymphocyte must pass.
      - ensures that only T Cells are able to recognize self -MHC protiens survive.
    - - Second test, ensures that T-cells do not recognize self-antigens displayed on self -MHC.
      - IF, they do they are eliminated by apoptosis.
      - Negative selection is the basis for immunological self-tolerance making sure that T cells dont attack the body's own cells which would cause auto immune disorders.