Caki-1 is a tumorigenic cell line that was established from the cells of a renal tumor taken from a 49-year-old Caucasian male with clear cell carcinoma. Caki-1 cells have a modal chromosome number of 68, exhibit an epithelial-like morphology, and grow adherently in monolayers in vitro . The Caki-1 cell line is suitable for both in vivo and in vitro transfection to study kidney cancer, and a Caki-1 xenograft model and Caki-1 Transfection Reagent to transfect Caki-1 cells are available through Altogen Biosystems .