Figure 2. Dynamics of Bacterial Populations in the Presence and After Withdrawal of Antibiotic Treatment.

Relative abundance of Cutibacterium acnes (formerly Propionibacterium acnes) (A) and Staphylococcus epidermidis (B) at various times during and after antibiotic treatment. Horizontal bar within box plots represents the median; bottom and top of each box, first and third quartiles; lower error bar extends to the lowest data point within 1.5 times the interquartile range from the first quartile; upper error bar extends to the highest data point within 1.5 times the interquartile range from the third quartile. Data points beyond 1.5 times the interquartile range above the third quartile or below the first quartile are plotted individually as outliers. Relative abundance of selected bacterial genera at various times during and after antibiotic treatment (C). Error bars indicate 95% CIs. P values calculated using t tests with 1000 Monte Carlo permutations and 5% false-discovery rate adjustment. Sample sizes shown on x-axes indicate distinct skin samples obtained from all 4 participants.

^aP < .05 compared with baseline.

^bP < .01 compared with baseline.