The Secondary Signal Needed for T_H0 Helper Cells to Differentiate

question 15

Multiple Choice

The secondary signal needed for T_H0 helper cells to differentiate into either T_H1 cells or T_H2 cells is the crosslink between:

• A) CD154 (on T_H0 helper cells) and CD40 (on APC cell)
• B) MHC I (on T_H0 helper cells) and B7 (on APC cell)
• C) CD4 (on T_H0 helper cells) and MHC II (on APC cell)
• D) CD8 (on T_H0 helper cells) and MHC I (on APC cell)
• E) CD28 (on T_H0 helper cells) and B7 (on APC cell)

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