1. Growth rates of ovarian follicles during natural menstrual cycles, oral contraception cycles, and ovarian stimulation cycles 
Angela R. Baerwald, Ph.D., Randy A. Walker, M.D., Roger A. Pierson, M.S., Ph.D. 
Fertility and Sterility 
Volume 91, Issue 2, Pages (February 2009)
DOI: /j.fertnstert
Copyright © 2009 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Serial transvaginal ultrasonographic images of the right ovary of a research participant on days 1 (A), 4 (B), 7 (C), 11 (D), 16 (E), and 17 (F) of a spontaneous menstrual cycle. The same ovarian follicle is identified throughout the growth phase in A–E. The corresponding corpus luteum on the day of ovulation is shown in E.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2009 American Society for Reproductive Medicine Terms and Conditions