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Viability of mouse mesenchymal stem cells cultured for 3 days in 50-day gel-conditioned media. A-D) Photomicrographs of cell cultures. Live cells stain green and dead cells stain red. A) Complete DMEM control (no gel), B) Pure PAAM gel, C) Pure Alginate Gel, D) IPN Gel. Scale bar represents 400 μm. E) Cell viability percentage as a function of gel type used to condition media.
