Effect of B. longum SPM1207 on fecal water content. All rats were acclimatized to the respective diets for a week. Then the rats in group 2 or 3 received daily 0.2 ml saline or B. longum SPM1207 (108~109 CFU/ml), respectively, for 2 weeks. Data are presented as means and standard deviation. *p < 0.05 significantly different compared with 1 week.