Fig. 2

Changes in body weight. a Protection group (PL16): Oral administration of L16 for 1 week (week 1) and continued feeding with S. aureus the following week (week 2). Normal feeding during the last week (week 3). b Treatment group (TL16): Oral administration of S. aureus for 1 week and continued feeding with L16 the following 2 weeks. The control group (Con): Oral administration of PBS instead of S. aureus or S. lactis L16 for 3 weeks. All groups were fed a normal diet throughout the experimental period. Data are presented as the mean ± SD (n = 2)