Figure 1. Vascular density in representative mouse tumours.
B16 melanoma, poorly vascularized (<5%); C26 colon carcinoma, well vascularized (5–15%); PO2 pancreatic adenocarcinoma, highly vascularized (>15%). Mouse tumour slices of 10 μm were prepared and stained using PECAM-1 (CD31) antibody as described in Materials and Methods. Original magnification ×100, bar 20 μm.
