Dual modifications of α-galactosylceramide synergize to promote activation of human invariant natural killer t cells and stimulate anti-tumor immunity by Chennamadhavuni, D, Saavedra-Avila, NA, Carreño, LJ, Guberman-Pfeffer, MJ, Arora, P, Yongqing, T, Pryce, R, Koay, H-F, Godfrey, DI, Keshipeddy, S, Richardson, SK, Sundararaj, S, Lo, JH, Wen, X, Gascón, JA, Yuan, W, Rossjohn, J, Le Nours, J, Porcelli, SA, Howell, AR