CEACAM5 and colorectal carcinoma: Specifically, the positive rates for IFCCs detection using CellCollector were 57.1%, 56.4%, and 100.0% for stages II, III, and IV (the stage IV patients information could be seen in Table S4, and all the CRC patients TNM staging information could be seen in Table S5), respectively, compared to CEA's rates of 23.8%, 39.1%, and 66.7%.