The 3D segmentation images and CD31 immunohistochemistry of the tumor vessels.

<p>A and B show the 3D segmentation images by CTA The white arrows show the microvessel sprouting, the blood vessel near the tumor was marked in red, and the blood vessel away from the tumor was marked in blue. C and D show CD31 immunohistochemistry of the tumor vessels. The black arrow indicates the microvascular areas.