Figure 1.A) pH-gradient driven 22Na-uptake into duodenal BLMvs in the presence and absence of HCO3 -, with and without DMA. B) High-stringency Northern Blot analysis of about 10 μg once purified poly (A+) RNA from rabbit gastric mucosa, duodenal mucosa, ileal mucosa, colonic mucosa, and kidney cortex. A glycerol aldehyde trisphosphate dehydrogenase (GAPDH) probe confirms loading of intact RNA in all lanes.