CD19 and neoplasm: Correspondingly, the measured average tumour weights in the AXL-CAR T group (A549 0.28 g, HCC827-ER3 0.40 g), were significantly lower than those in the CD19-CAR T (A549 0.68 g, HCC827-ER3 0.82 g) and mock (A549 0.72 g, HCC827-ER3 1.00 g) groups (Fig. 2e, f).