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. 2021 Mar 23;6(13):9269–9278. doi: 10.1021/acsomega.1c00824

Figure 5.

Figure 5

Time-variant AFM nanoindentation of the HAP/Col hydrogels. Histograms of the E for the HAP/Col (0/0.8, 100/3.8, 200/3.8, and 400/3.8) hydrogels with time: (a) 1 day, (b) 7 days, (c) 14 days, (d) 21 days, and (e) 28 days. The inserted data is the HAP/Col hydrogel (0/3.8) and the distribution of E for HAP/Col hydrogels narrows over time from 1 day to 28 days. (f) Time-variant E values of the HAP/Col hydrogels. For a HAP/Col (0/3.8) hydrogel, the detailed experimental results are provided in Figure S6 (see Supporting Information).