Fig. 4From: Proangiogenic alginate-g-pyrrole hydrogel with decoupled control of mechanical rigidity and electrically conductivity a Image of the electrical stimulation platform constructed of PDMS molds bound to ITO slides. b Direct potential cell stimulation images of fibroblasts adhered to AAD cross-linked alginate and alginate-g-pyrrole hydrogels after 0 and 2 h of stimulation. The scale bars equal 40 μmBack to article page