ocr: Mean Ethinyl Estradiol Concentrations in Serum after single dose and on Day 21 of Cycles 1 and: 3 70 O Single Dose 60 O- Cycle 1,Day - 21 - - l 1 - - - - - - Cycle 3, Day 21 a 50 - - 40 30 - - J 20 10 S - - - - - o - - - - - ) - - d - - 5 10 15 20 25 30 Time (Hrs.)
