Figure 1.

Differentially expressed lncRNAs in CD4⁺ T cells of the AECOPD group, stable COPD group, and control group.

Notes: (A–C) After normalization, the scatter plot showed difference in the expression of lncRNAs between different groups. Red, upregulated; green: downregulated; gray; not differentially expressed. (D–F) Hierarchical cluster analysis was performed to show the differentially expressed lncRNAs between different groups. Red represents higher expression level and green represents lower expression level.

Abbreviations: LncRNA, long noncoding RNA; AECOPD, acute exacerbation of COPD.