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Gel hydration capacity. A photo showing an amount of fillers (160 mg), before and after swelling in PBS. The increase in volume is noticeable. The gels were stained with toluidine blue to better visualize phase separation and were centrifuged before acquiring the image. It is evident that AFL and ASR did not reach their maximum swelling under these conditions. The image gives an idea of the relative hydro-action of the gels.
