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(a) Schematic description of gelatin methacrylate (GelMA) coated onto a carbon nanotube (CNT). (b) High resolution TEM image of CNT-GelMA. (c) Stress-strain curves of CNT-GelMA hydrogels with various concentrations of CNTs. (d) Tensile moduli of CNT-GelMA hydrogels. (e) 3T3 fibroblasts cultured on GelMA hydrogel (A) and CNT-GelMA hydrogel (B).(Scale bar: 100 μm) Reprinted from ref. 20. Copyright 2011 American Chemical Society.
