The relationship between CoCl2 exposure (HIF-1α inducer) and the expression of vimentin (Supplementary Fig. 1a), epithelial cell adhesion molecule (EpCAM) (Fig. 4a,d), and the growth factor receptor (HER2) (Fig. 4b,c) was examined in ovarian cancer cells. The gene discussed is HIF1A; the disease is ovarian cancer.