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Ceramide (Cer) and sphingomyelin (SM) in non-tumor (NT, blue boxes) and tumor tissues (TT, orange boxes) of patients with HBV and HCV infection. (A) Ceramide; (B) SM; (C) Very long-chain ceramide (Very LC Cer) and (D) Long-chain ceramide (LC Cer) levels in NT and TT of HBV, HCV and double infected patients. Small circles and stars in the figures identify outliers. * p < 0.05, ** p < 0.01 (Kruskal-Wallis-Test).
