FIG 4.

NK cells infected in vivo with T. gondii exhibit reduced levels of cytotoxicity and IFN-γ production. (A) Lack of degranulation by infected GFP⁺ NK cells collected from the peritoneal cavity of mice inoculated with infected DCs when mixed 10:1 with YAC1 cells. *, P < 0.05, Mann-Whitney test (n = 6 mice). (B) IFN-γ production by NK cells collected from the peritoneal cavity of mice inoculated with T. gondii-infected DCs and stimulated with PMA and ionomycin in vitro. *, P < 0.05, Mann-Whitney test (n = 6 mice).