to convert these phi changes into anion flux rates , the intrinsic buffer capacity ( beta i ) was determined over the same phi range by making small changes of [ nh4 ] o to determine the resulting changes of [ nh4 ] i and phi ( i.e. , beta i = delta [ nh4 ] i/delta phi ) in pc that had been pretreated with 1 mm amiloride and 200 microm [ h2 ] 4,4'-diisothiocyanostilbene-2,2'-disulfonic acid ( dids ) [ to block na+-h+ and cl- -oh- ( hco3- ) exchange ] .
C0003075
anion
C0021966
i