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Figure 1 .

Figure 1

Effect of atropine on lower basal oesophageal sphincter (LOS) pressure. Data have been grouped into intervals of pressure and are expressed as a percentage of the total recording time. Atropine significantly increased the proportion of time that LOS pressure was 2 mm Hg or less. *p<0.05 v control (saline infusion). Open columns, saline; closed columns, atropine.