Immunotherapy of NK-92-S3KD increases anticancer effector productions in HepG2-bearing mice. Immunotherapy of NK-92-S3KD increases anticancer effector productions in HepG2-bearing mice. A–C, Tumor tissue–derived human IFNγ, granzyme B, and perforin. D–F, Serum levels of human IFNγ, granzyme B, and perforin. Results showed that the levels of IFNγ, granzyme B and perforin in both tumor tissues and serum of HepG2-bearing mice on day 28 after tumor inoculation were enhanced in the tumor-bearing mice treated with NK-92-S3KD cells compared with parental cells. Data represent mean ± SME of three independent experiments for groups of at least 6 mice. **, P < 0.01; ***, P < 0.001 versus the saline group; ###, P < 0.001 versus the NK-92-EV group. Qing-Ming Wang et al. Cancer Immunol Res 2018;6:965-977 ©2018 by American Association for Cancer Research