Fig 5.

Persistence of probiotic preparation. Copy number (CN log) obtained from qPCR analysis carried out on (A) total DNA and (B) cDNA extracted from fecal material of healthy volunteers allocated in the probiotic or placebo group. In the probiotic group, significant differences (P-values <0.05; two-tailed Student’s t-test) between different time points [10 days of GFD (T1) and 20 days of 10 g/day gluten intake (T5), of which the last 10 days were the wash-out (T6)] are showed with red lines. Based on the comparison of the same time point between the probiotic and placebo groups, significant differences (^*P-values <0.05; ^**P-values <0.01, two-tailed Student’s t-test) are showed with black lines.