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. Author manuscript; available in PMC: 2019 Aug 27.
Published in final edited form as: Artif Cells Nanomed Biotechnol. 2018 Aug 27;46(SUP3):S434–S447. doi: 10.1080/21691401.2018.1499660

Figure 4.

Figure 4.

Collagen-Ph hydrogel microstructure as a function of collagen-Ph concentration and G’. (a) 3D confocal microscopy images and (b-c) summarized data for pore density and pore size are shown. P-values less than 0.01, 0.001 were considered statistically significant and were labeled ** and *** compared with the 0.15 % collagen-Ph hydrogel with the same G’. P-values less than 0.1, 0.01, 0.001 were considered statistically significant and were labeled #, ##, and ###, respectively compared with the collagen-Ph hydrogel with G’ of 50 Pa at the same concentration.