Figure 3.

The sections of implanted rat glioma were stained with haematoxylin and eosin (H&E). Histological characteristics that define glioblastoma multiform as seen in rats implanted with gliomas (a,c) and in rats co-injected with apyrase (b,d). Necrosis (N) and microvascular proliferation (V), giant cell formation and nuclear pleomorphism (arrow). Scale bars = 100 μm (a,b); 20 μm (c,d).