English: Photo of an experimental medical wound dressing material, held in forceps to demonstrate its stiffness
Original caption (also CC-BY 4.0)ː "The gel stiffness increased after crosslinking and can be easily picked up with a pair of forceps, while remaining optically transparent."
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https://creativecommons.org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue
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