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Staining patterns of serum amyloid A. (a) bar graph; (b) – (d) representative photomicrographs of different serum amyloid A staining patterns, including (b) complete lack of expression in both hepatocellular carcinoma and uninvolved liver; (c) expression in both hepatocellular carcinoma and uninvolved liver; (d) lack of expression in hepatocellular carcinoma but no lack of expression in uninvolved liver.
