Protection from FAS-induced apoptosis by MALT1 and API2-MALT1. (A) Parental BJAB cells with vIRES-puromycin vector alone (WT) or single clones of cells expressing MALT1 or API2-MALT1 were challenged for 16 hours with serial dilutions of soluble FAS-L alone, with (B) 0.1 μg/mL cross-linked CD40L, or with (C) a CD40L neutralizing antibody (anti-CD154). Results shown are representative of 4 different experiments. (D) FACS analyses of FAS expression in the 3 cell lines.