addition of 5 x 10 ( -5 ) m verapamil or 1 x 10 ( -4 ) m quinidine to the bath reversibly depressed net pah secretion ( jnetpah ) , apparent permeabilities of luminal ( pl ) and peritubular membranes ( pp ) to pah , and initial rate of pah transport into cells at the peritubular membrane without affecting net fluid absorption ( jv ) , but simultaneously produced a threefold increase in cellular pah concentration ( [ pah ] cell ) .
C0007603
cells
C0007634
cell