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A) The expression of five hub genes in liver hepatocellular carcinoma (LIHC) patients based on tumor grade (UALCAN database). B) Quantitative real-time polymerase chain reaction (PCR) results for the five hub genes. Expression of hub genes was normalized against β-actin expression. The statistical significance of differences was calculated by Student’s t-test. **p < 0.01, ***p < 0.001
