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Changes in mPTPs (a), MMP (b), and ATP (c) levels in quadriceps muscle in rats with chronic obstructive pulmonary disease. N = 10. Values are shown as mean ± standard deviation. ∗P<0.05, ∗∗P<0.01, versus control group; #P<0.05, ##P<0.01, versus model group; ▲P<0.05, ▲▲P<0.01, versus Bufei Jianpi group.
