Fig. 1

Scheme of sampling. On the top of the picture, the time of the cheese meals (lunch, dinner, etc.) and/or the oral hygiene actions (a red x on the toothbrush means that the teeth were not washed). Yellow arrows indicate the time of the day when cheese was eaten and when the teeth were washed. The Blue arrows indicate the buccal swab sampling collected at T = 0, T = 1 and T = 2. Samples (A), (B) and (C) are, respectively, the samples at different times