fig1

Figure 1. Hemosiderin deposition in unruptured brain arteriovenous malformations. H and E (a-c) and prussian blue staining (d-f) on the adjacent sections. (b) and (c) are enlarged pictures of the regions in squares (b) and (c) in (a) showing hemosiderin-positive areas. Insert in (b) shows two hemosiderin-laden macrophages. (d) Prussian blue staining of an adjacent section of (a). (e) and (f) are enlarged images of the regions in squares (e) and (f) in (d). Scale bars for a and d: 500 μm; for b, c, e and f: 50 μm