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. 2021 Jan 8;22(2):855–866. doi: 10.1021/acs.biomac.0c01577

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© 2021 American Chemical Society

This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License, which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes.

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Physical–chemical properties of gelnor and silk fibroin bioink systems. (A) In situ photorheometry showing the storage modulus (G′) of the bioinks as a function of time. Hydrogel samples were irradiated with visible light 30 s after the experiment started. (B) Viscosity changes as a function of the bioinks’ PEO concentration. (C) Electrical conductivity of hydrogels as a function of both PEO and photoinitiator concentration. (D) Sol fraction as a function of Ru/SPS photoinitiator concentration.* indicates significant difference.