Positive selection occurs when
a. cells become positive for either CD4 or CD8 by recognizing either the MHC class I or class II molecule
b. cells that recognize self-antigens are allowed to live
c. cells that recognize self-antigens undergo apoptosis
d. none of the above
a. cells become positive for either CD4 or CD8 by recognizing either the MHC class I or class II molecule
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Indicate whether the statement is true or false.
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What will be an ideal response?