Fig. 1

Morphology of B. wadsworthia and its effects in reducing body weight and fat mass of mice. a Colonies of B. wadsworthia on ABB agar after 2 days at 37 °C. b Electron micrograph of B. wadsworthia. Scale bar, 1 μm. Changes of body weight (c), food intake (d), mass of epididymal fat (e), mesenteric fat (f), subcutaneous fat (g) and perirenal fat (h) of NC and BW group. For c–g, data are shown as mean ± S.E.M. and tested by independent samples t test. For e, data are shown as median with interquartile range and tested by Mann–Whitney U test. *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001. For c–g, both groups n = 10; for h, NC group n = 10, BW group n = 9