1. Follicular blood flow is a better predictor of the outcome of in vitro fertilization–embryo transfer than follicular fluid vascular endothelial growth factor and nitric oxide concentrations 
Ki Hyung Kim, M.D., Dae Sik Oh, M.D., Jae Heok Jeong, M.D., Byung Sub Shin, M.D., Bo Sun Joo, Ph.D., Kyu Sup Lee, M.D. 
Fertility and Sterility 
Volume 82, Issue 3, Pages (September 2004)
DOI: /j.fertnstert
Copyright © 2004 American Society for Reproductive Medicine Terms and Conditions

2. FIGURE 1
Ultrasound images of follicular development on the day of hCG administration. The colored areas show vessels with a relatively high blood flow for an 18-mm follicle (A) or ovary (B).
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2004 American Society for Reproductive Medicine Terms and Conditions

3. FIGURE 2
Relationships between follicular fluid concentrations of VEGF and NO.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2004 American Society for Reproductive Medicine Terms and Conditions

4. FIGURE 3
Relationships between follicular blood flow and follicular fluid VEGF and NO concentrations according to the follicle size. (A) ≥18 mm; (B) 16–17 mm; (C) ≤15 mm.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2004 American Society for Reproductive Medicine Terms and Conditions