Transferred CEA-specific CAR-γδ T cells suppressed tumor growth in a xenograft mouse model; To evaluate the therapeutic potential of CEA.CAR-γδ T cells in vivo, we set up experiments where CEA.CAR-γδ T cells were transferred into NOG mice bearing 7-day-old tumor expressing CEA but not GD2 (BxPC-3) (Figure 3A). Here, CEACAM5 is linked to neoplasm.