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. 2019 Oct 10;10:2366. doi: 10.3389/fimmu.2019.02366

Figure 4.

Figure 4

Representative immunohistochemical analysis of C1q in low (A,B) and high grade (C,D) gliomas showing a high expression in both histotypes regardless of grade. C1q results mainly expressed by macrophages and the vascular stroma (see arrows). C1q expression in the endothelial cells is shown in panels (E,F) (see arrows, low, and high magnification). Polymer detection system with AEC (red) chromogen; scale bars, 50 μm.