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Astroglial 1321N1 cell adhesion versus pentacene film thickness. Circles are the mean's average percentage fraction of attached cells 3 h after the initial seeding of 250 cells/mm2 in serum-free conditions. Vertical error bars are the standard error of the mean (SE), horizontal error bars represent the coarsegraining on thickness. The continuous line is the weighted best fit using Eq. 9.
