M17, a gene specific for germinal center (GC) B cells and a prognostic marker for GC B-cell lymphomas, is dispensable for the GC reaction in mice.

Schenten D, Egert A, Pasparakis M, Rajewsky K. "M17, a gene specific for germinal center (GC) B cells and a prognostic marker for GC B-cell lymphomas, is dispensable for the GC reaction in mice." Blood. 2006;107(12):4849-56.