Although the CEA mRNA was detected in most of the CRC cell lines (7/8, Figure 2B), it was only expressed at relatively high levels in three cell lines (LoVo, Caco2 and HT29) and at very low levels in the other four cell lines (DLD-1, HCT116, H630 and RKO). The gene discussed is CEACAM5; the disease is colorectal carcinoma.