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. Author manuscript; available in PMC: 2011 Aug 1.
Published in final edited form as: Mol Pharm. 2010 Aug 2;7(4):1057–1068. doi: 10.1021/mp900178j

Table 3.

Intercellular pore radius determination for hCMEC/D3 wild type cells.

Compound MW Molecular Radius (Å) PM(× 10−5 cm/sec) Pore Radius (Å)
[14C] Mannitol 182 4.10 2.47 ± 0.02 19.39 ± 0.84
[14C] Urea 60 2.67 5.65 ± 0.08

molecular radii calculated from Stokes-Einstein equation for equivalent spheres.[17]