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. 2019 Aug 23;9:12317. doi: 10.1038/s41598-019-48566-7

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Influence of liquid environment on decellularized matrix topography and mechanics. (A) Height and Peak force error images from PeakForce Tapping imaging show no larger effect of liquid between day 1 and day 14 on Amnion and XenoDerm matrix topography. In MatriDerm, some collapsed fibres were observed along with well aligned fibres on day 14. Random fibres were running along DED and plain surfaces were seen in Epiflex. (B) The median of Young’s modulus values were obtained from force maps that enable the assessment of the stiffness of decellularized matrices between day 1 and day 14. There is a change in Young’s modulus value observed in Epiflex, MatriDerm and XenoDerm matrices but not in DED or Amnion on day 14 which is due to the impact of liquid environment. Filled and open arrow heads indicates the thick and thin fibres, respectively. Statistical results are reported in Materials and Methods section.