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Follicular dendritic cells restrict interleukin-4 availability in germinal centers and foster memory
B cell generation Granhical abstract Authors Lihui Duan, Dan Liu, Hsin Chen,..., Jinping An,
Brian J. Laidlaw, Jason G. Cyster Correspondence jason.cystereucsf.edu In brief B cells within
germinal centers (GCs) enter cycles of antibody affinity maturation or exit the GC as memory
cells or plasma cells. Duan et al. examine the contribution of interleukin (IL)-4 on B cell fate
decisions in the GC and reveal that IL4Ra + GC follicular dendritic cells limit bystander IL-4
activity, focusing IL-4 action on B cells undergoing selection

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