Fig. 3

HAS1–3 immunostainings in grade II and grade IV astrocytomas. HAS1 staining intensity is higher in grade IV astrocytomas (b) than in grade II astrocytomas (a). Results are similar for HAS2, the staining intensity is higher in grade IV astrocytomas (d) than in grade II astrocytomas (c). HAS3 staining intensities are very weak or negative in grade II (e) and grade IV astrocytomas (f). Scale bar in F is 50 μm