Plots of emtricitabine AUC0-∞ at 120-mg/m2 and 6-mg/kg doses by age cohort. ♦, cohorts 2 and 3, 22 months to 5 years, data from period 2; ▴, cohort 4, 6 to 12 years, data from periods 2 and 3; •, cohort 5, 13 to 17 years, data from periods 2 and 3. The horizontal line shows the average median AUC in adults (200-mg dose).