475 Fc-silent anti-TIGIT antibodies potentiate anti-tumor immunity without depleting regulatory T cells oleh Paul Foster, Amita Patnaik, Lisa Seitz, Dana Piovesan, Soonweng Cho, Xiaoning Zhao, Amy E Anderson, Nigel Walker, Hema Singh, Casey G Mitchell, Matthew J Walters, Kelsey E Sivick Gauthier, Amber E de Groot, Rebecca D Ray, Nina K Serwas