PMC2464749_01
Immunohistology: immunohistochemical stainings for CD31 (A), CD34 (B), HHV8 (C), and D2-40 (D) of the chest tumor (immunoperoxidase, original magnification: A-C 40x, D 20x).
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fig1
Immunohistochemistry revealed a strong expression of CD31 (Figure 1A), CD34 (Figure 1B) and FLI1 - as nuclear marker for endothelial differentiation - whereas actin and HHV8 (Figure 1C) were not detectable. A few of the vessels contained erythrocytes in their lumina while the majority of the vessels only held lymph and stained positive for D2-40 (Figure 1D).