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. Author manuscript; available in PMC: 2008 Sep 26.
Published in final edited form as: J Control Release. 2007 Jul 19;122(2):165–172. doi: 10.1016/j.jconrel.2007.07.004

Figure 4.

Figure 4

Correlation between cation transport numbers in skin with the corresponding values in water. A Pearson test shows the correlation to be strong and positive. Linear regression analysis confirms that the values in the skin are systematically higher than those in aqueous solution, a consequence of the membrane’s net negative charge and resulting cation permselectivity. The linear regression is characterized by equation 4 (see text); the dashed lines correspond to the 95% prediction interval.