PPP1R13L and colorectal carcinoma: Given that CDK1 mRNA and iASPP mRNA was highly expressed in CRC tissues; we then determined the protein levels of CDK1 and iASPP in five CRC cell lines: HCT116, HCT28, LoVo, SW480 and SW620, compared with a normal cell line, CRL-1831 using Western blot assays.