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. Author manuscript; available in PMC: 2021 Oct 19.
Published in final edited form as: ACS Appl Bio Mater. 2020 Sep 17;3(10):6944–6958. doi: 10.1021/acsabm.0c00823

Figure 4. Degradation of bulk NB and CMR hydrogels.

Figure 4.

(A) Bulk cylindrical hydrogels degrade through varied mechanisms upon irradiation with either 365 nm (I0 = 10 mW cm−2) or 400 – 500 nm (I0 = 17.1 mW cm−2) light over 20 min as monitored by the normalized volume. (B) Bulk hydrogels irradiated through a layer of pig skin over 60 min exhibit similar trends in degradation profiles, albeit with slower overall rates as expected relative to those irradiated in buffer alone. Note, the expanded y-axis used to show differences in degradation profile when hydrogels were irradiated through pig skin. The data shown illustrate the mean (n = 3) with error bars representing standard error. Full statistical analysis comparing the final time points in each condition can be found in the SI (Table S2 and Table S3).