Fig. 4From: ERO1α is a novel endogenous marker of hypoxia in human cancer cell linesExpression of ERO1 and CA9 in tumour spheres from HCT116 and HeLa cells. Immunostaining using anti-pimonidazole, anti-ERO1α, and anti-CA9 antibodies in spheres obtained using Ultra low attachment plates as described in the Materials and Methods. a HeLa cells; b HTC116 cells. Representative tissue photographs are shown. Scale bar: 50 μmBack to article page