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Figure 4 Representative Photomicrographs of IL-6 Staining in Examined Specimens of Aortic Valves
(A) Interleukin (IL)-6 staining in aortic valve stenosis. Arrows indicate IL-6 immunopositive inflammatory cells in the valve stroma (x400). (B). The IL-6 staining in aortic insufficiency showing negative staining for IL-6 (x400).
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