DNMT1 and colorectal carcinoma: The basal expression levels of DNMT1 in different CRC cells was variable: in some cases cells lines such as Caco-2, DLD1, HT29, Colo205, LoVo, SKCO1, and SNUC1 show very low or no basal levels, while others such as Colo320, HCT116, SW620, SW626, and SW480 showed higher levels (Fig 1B and 1C).