STAT1 and infection: Following T. crassiceps i.p. infection with 10 cysticerci, we determined the antibody production against T. crassiceps in the serum of STAT1+/+ and STAT1−/− mice obtained at weeks 4 and 8 post-infection to detect specific anti-T. crassiceps IgG1 and IgG2a antibodies.