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Logarithm of the ratio of colorectal cancer (CRC) tissues (T)/matched adjacent non-tumor tissues (N) for RNA levels of UQCRB (a), UQCRFS1 (b) and MT-CYB (c). (d) Expression level of complex III genes in CRC. Gene expression levels were normalized to that of GAPDH. Relative expression was calculated using the 2−ΔΔCt method. Data are presented as the mean±s.e.m. P-values are represented as *P<0.05, **P<0.01 and ***P<0.001.
