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. 2019 Jan 31;9:1072. doi: 10.1038/s41598-018-37788-w

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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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Morphology of gelatin based colloidal gels. (a) Microstructured morphology of N-, P-and AB-gel from scanning electron microscopic images. Morphological features of the microstructure analyzed by measuring characteristic length, intersection density and void areas of the gels from these images using DiameterJ plugin in ImageJ (**P ≤ 0.01, *P ≤ 0.05, ANOVA). (b) Confocal scanning fluorescent images and 3D interactive surface plot (color code indicates z-depth) of gels showing morphology and spatial distribution of voids in the gels. Lower panel images are enlarged version for better visualization.