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Fig 7. A, Microvessel immunostaining by using CD31 in meningioma (patient 6, same case as in Figs 1 and 2). The microvessel walls are positively stained. B, The microvessel areas are extracted automatically by the software. Note that the light green areas are overlaid on the immunostained specimen to the areas recognized as the lumen of microvessel structures.
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