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The Secondary Signal Needed for TH0 Helper Cells to Differentiate

Question 56

Multiple Choice

The secondary signal needed for TH0 helper cells to differentiate into either TH1 cells or TH₂ cells is the cross-link between ________ (on TH0 helper cells) and ________ (on APC cell) .


A) CD154; CD40
B) MHC I; B7
C) CD4; MHC II
D) CD8; MHC I
E) CD28; B7

Correct Answer:

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