GFP fluorescent images of PSMA CAR-T and UTD T cells treated PC3-PSMA+GFP+ tumor spheroids. (Left) PSMA CAR-T cells specifically targeted and induced cytotoxicity in PC3-PSMA+GFP+ spheroids. (Right) UTD T cells did not induce cytotoxicity for all conditions and time points. The “No Treatment” images in the panel are the same sample.