PD12-07 ADDITION OF ANTI-PD-L1 ENHANCES ANTITUMOR EFFICACIES OF BCG AND BCG-STING BY CD8+ T CELL EXPANSION IN A MURINE SYNGENEIC MB49 MODEL OF UROTHELIAL CARCINOMA. (May 2022) - Lombardo, Kara; Praharaj, Monali; Becker, Russell; Harris, Kelly; Bishai, William; Matoso, Andres; Bivalacqua, Trinity; Singh, Alok