CD33 and neoplasm: The addition of both CD117 and CD33 Db-FM to the co-culture of MOLM14 CD117mid and AdFITC-CAR T-cells resulted in significant faster tumor cell lysis (measured by influx of PI) as shown in Fig. 3E, which correlated with a more rapid, durable engagement time of CAR T-cells with target cells (Fig. S3A–E).