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Percentage of remaining MNs heights vs dissolution time of PVP-based MN arrays encapsulating the model drug FD 70 after insertion for predefined times into porcine ocular tissues; a the corneal tissues, b the scleral tissues. MN arrays were fabricated using various PVP/drug hydrogel formulations: PVP K29/32/ FD70 (F2); PVP K29/32/ FD70 (F4); PVP K30/ FD70 (F5); PVP K15/ FD70 (F6). Data reported as mean ± SD, n = 3
