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. 2017 Mar 31;38(5):504–510. doi: 10.1093/carcin/bgx028

Figure 1.

Figure 1.

(A) Relative mRNA expression levels of eight NER genes between SCCHN patients and healthy controls. Quantitative real-time PCR was used to measure the relative expressions of eight NER genes. Housekeeping gene 18S was used as the reference. The threshold cycle or Ct value is the PCR cycle at which a significant increase in fluorescent signal is first detected. The expression levels of eight NER genes relative to that of 18S were calculated by ΔCt. ΔCt = Ct (Gene) − Ct (18S). The smaller the ΔCt value, the higher the level of the measured target mRNA (*P < 0.05). (B) Modification effects of DDB1 by sex.