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. 2014 Nov 12;9(11):e112284. doi: 10.1371/journal.pone.0112284

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© 2014 Zhao et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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The concentration of GAG in cell supernatant and synovial fluid was measured by ELISA. The data are shown as the mean ±S.D. a shows GAG contents in cell supernatant of each group compared with p<0.05; b shows GAG in synovial fluid from the rabbit knees of each group compared with p<0.05.