CEACAM5 and neoplasm: Amnis image stream analysis showed colocalization of CAR-T cells and tumor cells, which suggest that the scFv of the CAR expressed on CEA CAR-T could bind with hCEA on tumor cell stably and activated the CAR-T sufficiently, because both CAR-T with or without Bcl-xL were far bigger than T cell transduced with empty MFG vector.