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. 2015 Jul 28;5:12537. doi: 10.1038/srep12537

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Serum concentrations of galectin-3 (a) and GDF-15 (b) were quantified in control (n = 132) and arthrofibrosis patients (n = 95, Afib1 to Afibf3: increasing arthrofibrosis score) by ELISA. Boxes show the 25^th to 75^th percentiles; horizontal lines in the boxes show the median while vertical whiskers show the 5^th to 95^th percentile. *p < 0.05; **p < 0.01; ***p < 0.001 (Mann-Whitney U-test).