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. Author manuscript; available in PMC: 2010 Jul 8.
Published in final edited form as: Pharm Res. 2009 Sep 11;26(11):2513–2522. doi: 10.1007/s11095-009-9967-2

Fig. 1.

Fig. 1

SEM images taken of a typical silicon MN array from directly above (a), of a single MN from above (b), of an array from the side (c) and of an individual MN from the side (d). Digital photograph of a typical silicon MN array (e).