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![Gene expression and carbonic anhydrase IX promoter methylation in oral cancer and smokers oral mucosa: a pilot study](https://image.oaes.cc/e995a09b-7835-43c6-8154-85517d8b2e8e/2057.fig.1.png)
Figure 1. Carbonic anhydrase IX expression, relative quantification (Log) using quantitative real-time polymerase chain reaction. Values are expressed as mean and standard deviation. Student's t-test was used to compare gene expression (*P ≤ 0.05)