NLRP3 and infection: Parasite counts revealed that WT control animals harbored, at 8 weeks of infection, in average 271 ± 31 metacestodes, whereas in WT mice co-housed with NLRP3−/− animals, an average of 94 ± 33 metacestodes per mouse were recovered (Fig. 6a), showing that WT mice co-housed with NLRP3−/− mice for 4 weeks enhanced their resistance against T. crassiceps infection.