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(A) A vestibular schwannoma displays weak (+) expression of vascular endothelial growth factor (VEGF) (immunohistochemistry and hematoxylin; original magnification 200 ×). (B) A vestibular schwannoma displays moderate ( + +) expression of VEGF in the cytoplasm and especially in the perinuclear region of many of the tumor cells (immunohistochemistry and hematoxylin; original magnification 200 ×).
