B Cells Have Been Shown to Need Two Signals for Activation.Absent

question 37

Multiple Choice

B cells have been shown to need two signals for activation.Absent T-cell help, they will NOT activate because

• A)T cells provide signal 1 through the B-cell receptor.
• B)T cells provide signal 2 through the B-cell receptor.
• C)T cells activate B cells indirectly by activating follicular dendritic cells.
• D)T cells activate B cells through CD40 signaling.
• E)B cells will still activate because of dendritic cells.