Activated TH cells signal to B cells to initiate their activation program via which of the following?

Activated TH cells signal to B cells to initiate their activation program via which of the following?










A. CD40L on the T cell to CD40 on the B cell
B. CD40 on the T cell to CD40L on the B cell
C. FasL on the T cell to Fas on the B cell
D. Fas on the T cell to FasL on the B cell
E. Notch ligand on the B cell to notch-1 on the T cell













Answer: A


Biology

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