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sarthaknitw sarthaknitw
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6 years ago
Which of the following is NOT an example of a checkpoint in lymphocyte maturation that contributes to the selective maturation of cells with useful antigen receptors?
 
  A. B cell precursors that cannot express Ig  heavy chains die by apoptosis.
  B. T cell precursors that cannot express TCR  chains die by apoptosis.
  C. Immature B cells that bind to self antigen with high affinity die by apoptosis.
  D. Developing T cells that fail to express TCR  chains die by apoptosis.
  E. Developing T cells that recognize self major histocompatibility complex (MHC) molecules with high affinity die by apoptosis.
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gauzegauze
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6 years ago
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