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Effect of ghrelin on H. pylori LPS-induced expression of cNOS and iNOS activities in gastric mucosal cells. The cells, preincubated with the indicated concentrations of ghrelin, were treated with the LPS at 100 ng/ml and incubated for 16 h. Values represent the means ± SD of five experiments. *P < .05 compared with that of control. **P < .05 compared with that of LPS alone.
