Figure 4.

Percentage of viable isolated duodenal epithelial cells, as assessed by Trypan blue exclusion (per cent cells excluding dye; upper graph), or MTT conversion (per cent control; lower graph), 5 h following challenge with H. pylori lipopolysaccharide (LPS; 3 ml kg⁻¹, i.v.) in rat treated concurrently with saline (control) or with N-(3-(aminomethyl)benzyl)acetamidine (1400 W; 0.2–5 mg kg⁻¹, i.v.). Data are mean±s.e.mean of 5–9 experiments, where ^* denotes a significant difference from the control (P<0.01) and ⁺ a significant difference from the LPS alone group (P<0.05).