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. 2012 Jun 21;7(6):e39526. doi: 10.1371/journal.pone.0039526

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Huang 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 graft was degraded over time. At 4 w after implantation, the graft showed worm-eroding structures as indicated by black arrows (A, B). At 8 w after implantation, some of the graft degraded into pieces which were indicated by black arrows (C, D).