() L-10 Co-Stimulation TGFB CTLA-4- B7 CD28+ T CD154 CD40 APC (CD40L) Cell CD2 CD58 TCR-MHC (+)IL-1,IL-6,TNFa BDCCo-Stimulation T Cell APC CTLA-4 - CD28 + CD154 (CD40L) CD2 CD58 CD40 B7 (+)IL-1, IL-6, TNF IL-10 TGF (-) TCR-MHC BDC