GAPDH and Barrett esophagus: Expression of MAdCAM-1 in BE biopsies (0.01216±0.004200, 2−ΔCT±SEM, corrected for GAPDH) was similar to expression of MAdCAM-1 in duodenal biopsies from BE patients (0.007052±0.001244) and controls (0.008665±0.002790) (Figure 8).