Shining a light on germinal center B cells.

Cyster, Jason G · Cell · 2010

editorial · Level V

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Abstract

The mechanisms of B cell selection in lymphoid tissues are poorly understood. In this issue, Victora et al. (2010) use imaging of photoactivatable green fluorescent protein to define the movements of B cells in germinal centers and provide evidence that antibody affinity maturation is driven by competition for T cell help.