Figure 4From: Up-regulation of hypoxia inducible factor-1α by cobalt chloride correlates with proliferation and apoptosis in PC-2 cellsFlow cytometry was used to observe the apoptosis of PC-2 cells by staining with annexinV-FITC/PI. A. Normoxia group; B. CoCl2 100 μmol/L group; C. CoCl2 150 μmol/L group; D. CoCl2 200 μmol/L group.Back to article page