Previous studies defined NK cells, T cells and microglia as sources of IFN-γ during cerebral toxoplasmosis (Gazzinelli et al., 1993; Hunter et al., 1994; Gavrilescu et al., 2004; Kim et al., 2012; Gazzinelli and Sher, 2014). This evidence concerns the gene IFNG and cerebral toxoplasmosis.