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Fig. 6. The chloride channel blocker DPC depresses basal secretion and reduces the
effect of (A) 10 µmol l–1 Tenmo-ADFb (+ADFb) and (B) 1
nmol l–1 Achdo-KII (+AKII). Bars represent the means + 1
s.e.m. for the number of replicates shown in parentheses. Tubules were held in
control saline (open bars) or moved to a saline containing 0.2 mmol
l–1 DPC in the first experimental period (+DPC; solid bars).
Identical letters indicate significant differences between mean rates of
secretion (P<0.01).