(a) Effect of bEnd3 cells treatment for 24 h with 10 μM of JW74, Phen, SB2, BrG and Tph on the transport of 125I-Aβ40, added to the lower chamber of the inserts, across bEnd3 monolayer. 125I-Aβ40 transport is determined as transport quotient (Aβ-TQB→A). (b) Effect of increasing concentration of Tph on the transport of 125I-Aβ40, and (c) permeability of 14C-inulin. Data are presented as mean ± SD of three independent experiments. *P<0.05, **P<0.01, ***P<0.001, ns=not significant.