ENG and renal cell carcinoma: In addition, other studies have reported that CD105+ cells are present in the established RCC cell lines 786-O, 769-P, ACHN, Caki-1, Caki-2, SMKTR2, SMKTR3, and RCC-6 (Khan et al., 2012, 2013) and that there is no relationship between CD105 and gender, age, cell type, or tumor size (Sandlund et al., 2006).