Serum-Derived Exosomal TBX2-AS1 Exacerbates COPD by Altering the M1/M2 Ratio of Macrophages through Regulating the miR-423-5p/miR-23b-3p Axis

To investigate the mechanism of serum exosomes in chronic obstructive pulmonary disease (COPD), especially the effect of lncRNA TBX2-AS1 on macrophage polarization.