B cells follow which of the following chemotactic signals to migrate to the cortical regions of secondary lymphoid tissue?

B cells follow which of the following chemotactic signals to migrate to the cortical regions of secondary lymphoid tissue?

B cells follow which of the following chemotactic signals to migrate to the cortical regions of secondary lymphoid tissue?












A. CCL19
B. CXCL13
C. CCL21
D. Both A and C
E. None of the above













Answer: B