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The effect of ectopic FGF8b and VEGF on proliferation. Ki67 immunostaining of FGF8b (n = 40), VEGF (n = 5) and mock (n = 23) tumours (Bar 200 μm). The relative number of Ki67-positive cells in tumours was counted in a blinded manner in 3 fields per tumour and the results were expressed as percentage of positive cells per mm2. There were significantly more proliferative cells (p < 0.001) in both FGF8b and VEGF tumours compared with mock tumours.
