CEMIP and malignant colon neoplasm: Consistent with our findings in the tagged CEMIP transfection studies, anti-CEMIP monoclonal antibodies immunoprecipitated endogenous full length CEMIP protein from the serum-free cell culture supernatant of colon cancer cell lines expressing CEMIP (FET and V411) while no CEMIP was detected in lines that do not express the CEMIP transcript (RKO and V364) (Figure 4B).