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Figure S1. Loss of TOX does not inhibit B cell development. (A) Isolated BM cells were analyzed by flow cytometry for the presence of B cell Hardy fractions D–F (Hardy, R.R., C.E. Carmack, S.A. Shinton, J.D. Kemp, and K. Hayakawa. 1991. J. Exp. Med. 173:1213­–1225). (B) Splenic B cells from Tox^+/+ (+/+) and Tox^−/− (−/−) mice were analyzed for expression of surface IgM and IgD.