In vitro transformation of human skin epithelial cells: Role of RAS oncogene in malignant progression Fusenig, N.E.; Boukamp, P.; Breitkreutz, D.; Hülsen, A.; Petrusevska, S.; Cerutti, P.; Stanbridge, E. Toxicology in Vitro An International Journal Published in Association with Bibra 4(4-5): 627-634 1990 0887-2333 10.1016/0887-2333(90)90132-d https://eurekamag.com/research/031/865/031865970.php