The secondary signal needed from a T cell for a B cell to differentiate into a plasma cell, is the crosslink between:

The secondary signal needed from a T cell for a B cell to differentiate into a plasma cell, is the crosslink between:



a. CD8 (on TC cell) with MHC I (on B cell)
b. CD4 (on TH cell) with CD40 (on B cell)
c. MHC II (on TC cell) with CD4 (on B cell)
d. CD8 (on TC cell) with CD40 (on B cell)
e. CD154 (on TH cell) with CD40 (on B cell)


Answer: CD154 (on TH cell) with CD40 (on B cell)


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