Growth-factor receptor-bound protein-2 (Grb2) signaling in B cells controls Iymphoid follicle organization and germinal center reactionIhn Kyung Jang, Darran G. Cronshaw, Luo-Kun Xie, Guoqiang Fang, Jinping Zhang, Hyunju Oh, Yang-Xin Fu, Hua Gu, Yongrui Zou and Klaus Rajewsky · Proceedings of the National Academy of Sciences of the United States of America · 2011