The Secondary Signal Needed from a T Cell for a B

question 31

Multiple Choice

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 the T_C cell) with MHC I (on the B cell)
• B) CD4 (on the T_H cell) with CD40 (on the B cell)
• C) MHC II (on the T_C cell) with CD4 (on the B cell)
• D) CD8 (on the T_C cell) with CD40 (on the B cell)
• E) CD154 (on the T_H cell) with CD40 (on the B cell)

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