1. Cumulus cells and their extracellular matrix affect the quality of the spermatozoa penetrating the cumulus mass 
Shun-Jia Hong, Ph.D., Philip Chi-Ngong Chiu, Ph.D., Kai-Fai Lee, Ph.D., Jenny Yin-Mei Tse, Ph.D., Pak-Chung Ho, M.D., William Shu- Biu Yeung, Ph.D. 
Fertility and Sterility 
Volume 92, Issue 3, Pages (September 2009)
DOI: /j.fertnstert
Copyright © 2009 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
The acrosomal status of spermatozoa after penetrating various cumulus columns (n = 10) determined by fluorescein isothiocyanate–labeled peanut agglutinin staining. Values are median with interquartile range. a,bP<.05 between values with different superscripts.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2009 American Society for Reproductive Medicine Terms and Conditions

3. Figure 2
Effects of hyaluronic acid on spontaneous acrosome reaction (n = 10). Values are median and interquartile range. P<.05 compared with the medium-alone control.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2009 American Society for Reproductive Medicine Terms and Conditions