Fig. 10. Effects of the MRP2 inhibitors MK-571 and probenecid (PROB) on
transepithelial flux of Texas Red across isolated Drosophila tubules
set up in Ramsay assays. Each bar shows the flux (mean +
S.E.M.) for 79 tubules (MK-571) or 10
tubules (probenecid) bathed in saline containing the indicated concentration
(µmol l1) of Texas Red in the absence (filled bars) or
presence (open bars) of the indicated inhibitor. Asterisks indicate
significant (P<0.05) decreases in flux in the presence of each
drug, relative to the corresponding controls.