CD19 and neoplasm: Whole-tissue tile scans of the CD19, CAR RNA FISH co-staining with either GZMB RNA FISH (n = 5) (Fig. 4C) or IFNγ RNA FISH (n = 5) (Fig. 4D) also indicated that the highest expression of GZMB but not IFNγ is in close proximity to the tumor.