CD19 and neoplasm: In the lung adenocarcinoma model, mice (n = 5 for the research group and n = 7 for the GMP group) were implanted with 3 × 105 MR232 tumor cells, 3 days later mice were infused iv with 1 × 107 CD19 or CD44v6.CAR T cells and tumor growth was quantified by measuring tumor size.