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BMSC-Exos reduced compression-caused apoptosis in NP cells. (a) Annexin V/PI staining tested NP cell apoptosis by flow cytometry. (b) Quantification analysis of NP cell apoptosis. (c) The TUNEL staining observed NP cell apoptotic changes. Scale bar: 100 nm. Data are expressed as the mean ± SD from three independent experiments. ∗P < 0.05 versus the control group; #P < 0.05 versus the compression group.
