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A mixture of hepatic cells and chitosan/gelatin solution was deposited to construct a hepatic analog by way of layer-by-layer deposition technique using a home-made devise. The size and cell concentration of the analogs can be controlled freely. Approximately 90% of the hepatic cells remained viable under 0.2 Mpa extrusion pressure. Cultured in vitro 8 weeks before animal test, hepatic cells in structure...
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