Figure 6. Immune infiltration analysis according to the ImmuCellAI database. (A) Correlation of POC1A expression with immune cell infiltration in LUAD. (B) Relation of POC1A expression with tumor purity, ImmuneScore, ESTIMATEscore and StromalScore. Red and blue colors indicate positive and negative correlations, respectively; deeper color indicates a strong correlation *P<0.05, **P<0.01, ***P<0.001, ****P<0.0001.