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. 2011 Spring;10(2):193–201.

Figure 1.

Figure 1

(a) Scanning electron micrograph of ketorolac tromethamine transdermal patch shows homogenous distribution of drug clusters in the matrix, before applying on skin. (b) Scanning electron micrograph of ketorolac tromethamine transdermal patch shows holes in the matrix after 24 h of in-vitro skin permeation