in contrast , the addition of the cl/hco3 exchange inhibitors h2 4,4'-diisothiocyanostilbene-2,2'-disulfonate ( dids ) or pentachlorophenol ( pcp ) causes a drop in intracellular ph , and the removal of extracellular chloride in the presence of bicarbonate leads to a large intracellular alkalinization , which indicates a role for the anion exchanger in ph homeostasis in these cells .
C0008203
chloride
C0003075
anion