CD40LG and toxoplasmosis: The current ELISA assay for toxoplasmosis in autistic children detected 11 (24.4%) of the antibodies [10 (22.2%) IgG + /IgM − and 1 (2.2%) IgG + /IgM +], while only 1 case (2.2%) of the Toxoplasma DNA was detected by RT-PCR assay.