Owever, there were other studies indicating a better clinical outcome in ALDH1(+) cancer patients, using different antibodies. Our previous study, using rabbit polyclonal antibody against human ALDH1A1 (ab63026, Abcam, Cambridge, UK) has proved that ALDH1 expression in vulvar squamous cell carcinomas predicted a significantly better survival than the ALDH1 negative cases [28]. Similarly, Hessman a