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. 2016 Jun 17;17(6):963. doi: 10.3390/ijms17060963

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© 2016 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).

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Proteolytic enzyme activity in hASCs during differentiation. (A) The proteolytic enzyme activities of Ud-ASC, Ad-ASC, Cd-ASC, and Od-ASC were detected by DQ-BSA; (B) the MMP-2 activities of Ud-ASC, Ad-ASC, Cd-ASC, and Od-ASC were measured by zymography. The molecular weight of MMP-2 pro-form is 72 kDa and the active form is 62 kDa; and (C) the quantitative data of accumulated band intensity of MMP-2, both pro-form and active-form. The band intensity (in panel B) was measured by ImageJ software. The data are shown as the mean ± SEM (n = 3, Ud-ASC vs. Cd-ASC, *: p < 0.05).