Figure 2
HE staining (a, b, c and d), Ki67 (e, f), type IV collagen immunochemistry (g) and DAPI stained nuclei (h) of sections of 9 L tumor implanted in rat brains. Images were taken from an unirradiated tumor (a, b) and from a rat which died 89 days after implantation (c–h). NT: normal tissue. N: necrotic area. TM: tumor margin. Ki67 positive cells (proliferating cells) appear in brown on images (c) and (d). Scale bars: 100 µm (a, c, g and h), 200 µm (b, d, e and f). |