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Graphs representing the average percent reduction in MN height vs predefined compression forces. MN arrays were fabricated either from a plain PVP hydrogels i.e. P1, P2 and P3, b drug-loaded PVP MNs i.e. F1, F2 and F3 (at a concentration of 2 mg/ml). c PVP K29/32-based MN arrays encapsulating the model drug FD 70 at a concentration of either 0 (P1), 2 (F2) or 10 mg/ml (F4). Data reported as mean ± SD, n = 3
