Fig. 5.

Trends in permeability coefficients for a homologous series of aliphatic weak acids. (A) P vs. acyl length. (B) P vs. water/octanol partition coefficient, K (log₁₀ scale). In B, the solid line denotes data from this study, the dotted line indicates data from ref. 9, and the dashed line denoted data from ref. 12. All K values were taken from refs. 9 and 12. Note that partition coefficient data were not available for the same weak acids in the two studies cited.