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PTX had no significant effect on the apoptosis of RA-FLS. (A) RA-FLS apoptosis was measured using the annexin V-FITC/PI staining assay after PTX treatment for 24 and 48 h. (B) Total apoptosis, early apoptosis and late apoptosis rate of RA-FLS were analyzed. Data are expressed as mean ± SD (n = 3).
