fig2

Figure 2. CD3⁺ T-lymphocytes and CD68⁺ macrophages. (a-c) Sections from 3 individual bAVM specimens. (c) Sections from an superficial temporal arteries (STA). Squares in H and E, images are enlarged to show CD68, CD3 and CD20 positive cells in the images next to them. T-lymphocytes and macrophages were detected on the vessel wall (a2 and a3) and between vessels (b2, c2, b3 and c3). Only a few CD20⁺ B-lymphocytes were detected in the lumen (b4) and between vessels (c4). No T- and B-lymphocyte, and macrophage were detected on the wall of STA. Scale bar for a1-d1: 500 μm; scale bar for a2-a4: 100 μm; scale bar for b2-b4, c2-c4, d2-d4: 20 μm