1. Prediction of the rates of fertilization, cleavage, and pregnancy success by cumulus- coronal morphology in an in vitro fertilization program 
Siu T. Ng, M.D., Tai-Ho Chang, M.D., T-C.Jackson Wu, M.D., Ph.D. 
Fertility and Sterility 
Volume 72, Issue 3, Pages (September 1999)
DOI: /S (99)

2. Figure 1
The grading of CCM at oocyte retrieval. Representative photographs of grades 1 (A), 2 (B), 3 (C), and 4 (D) CCM. Grade 1 COCs display corona radiata cells and sparse cumulus cells. Grade 2 COCs display tightly packed corona cells and dense cumulus cells. Grade 3 mature COCs display expanded corona cells and expanded fluffy cumulus cells. Grade 4 postimmature COCs display dark, degenerated corona cells and expanded, scanty cumulus cells. (credit)Ng. Cumulus-coronal morphology.
Fertil Steril 1999.
Fertility and Sterility  , DOI: ( /S (99) )

3. Figure 2
The rates of normal fertilization, polyspermy, and cleavage among the four CCM grades. ∗P<.05 compared with the other CCM groups. □ = grade 1; = grade 2; = grade 3; and ■ = grade 4.
(credit)Ng. Cumulus-coronal morphology. Fertil Steril 1999.
Fertility and Sterility  , DOI: ( /S (99) )

4. Figure 3
The percentage of pregnancies per cycle versus the percentage of grade 3 COCs per cycle. The bars represent the SE. ∗P <.05.
(credit)Ng. Cumulus-coronal morphology. Fertil Steril 1999.
Fertility and Sterility  , DOI: ( /S (99) )

5. Figure 4
The distribution of pregnancy outcome according to the percentage of grade 3 COCs per cycle and patient age. ▵ = not pregnant; • = pregnant.
(credit)Ng. Cumulus-coronal morphology. Fertil Steril 1999.
Fertility and Sterility  , DOI: ( /S (99) )