Restoration of the splenic T and B cell architecture in Fc-BAFF injected BAFFdeficient mice. BAFF deficient mice were injected at day 0 with 100mg BAFF (human):Fc (human) (AG-40B-0120) intravenously and at day 14 with 50mg BAFF (human):Fc (human) intraperitoneal. At day 21, injected BAFFdeficient mice were sacrificed together with WT and control BAFFdeficient mice and splenic T and B cell architecture was analyzed by fluorescence microscopy on cryosections. A, Spleen sections of WT (left picture), BAFF deficient (middle picture) or injected BAFFdeficient mice (right picture) were stained for IgM (red) and CD90 (green). (B) Spleen sections of the same mice were stained for IgM (green) and MOMA (red).