845032.fig.001
Figure 1: Mean relative level of arylalkylamine-N-acetyltransferase (AA-NAT) expression in antral and body gastric mucosa in healthy subjects (control, white bars) and subjects with asymptomatic (grey bars) and symptomatic (black bars) H. pylori infections as measured by real-time PCR. Error bars denote SD; for each group; , compared with the control.