21. The Immune System
Introduction to B Lymphocytes
Multiple Choice
Multiple ChoiceA naive B cell is activated when:
A
The B cell’s BCR binds to an endogenous antigen presented by an APC.
B
The B cell is told to differentiate into a plasma cell or memory B cell by a CD4 effector cell.
C
The B cell’s BCR binds to a “free” antigen that is not bound to an APC.
D
When A and B occur.
E
When B and C occur.
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