FIGURE 5
From: CD9 Expression on Lymphatic Vessels in Head and Neck Mucosa
Expression of podoplanin, CD9, and CD34 in vascular tumors. Small flat-lined vessels of this lymphangioma were strongly positive for podoplanin (A, arrows) and for CD9 (B, arrows) but negative for CD34 (C). Small capillaries that were negative for CD9 stained intensely for CD34 (C, arrowheads, magnification 100×). Small vessels of a capillary hemangioma showed nearly no podoplanin (D, arrows) and CD9 reactivity (E, arrows) but were CD34 positive (F, arrowheads, magnification 200×). Tumor cells of Kaposi's sarcomas demonstrate a high immunoreactivity for all three antibodies (G–I, magnification 200×).
