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a) Median neurite length of PC12 cells cultured on PCLF-PPyNSA scaffolds under ES treatment regimens of 20Hz and constant current. Figure 9b,c show the neurite length distribution in terms of total neurite counts (b) and in relative values (c) for different ES treatments applied. *denotes significant difference compared to cells cultured in the absence of ES (p <0.01).
