Is the zona pellucida thickness of human embryos influenced by women's age and hormonal levels? Hanna Balakier, Ph.D., Agata Sojecki, M.Sc., Gelareh Motamedi, M.Sc., Siamak Bashar, M.Sc., Rodica Mandel, M.Sc., Clifford Librach, M.D. Fertility and Sterility Volume 98, Issue 1, Pages 77-83 (July 2012) DOI: 10.1016/j.fertnstert.2012.04.015 Copyright © 2012 American Society for Reproductive Medicine Terms and Conditions
Figure 1 Day 3, 8-cell, grade 1 embryo from 39-year-old patient (×600). Measurements of zona pellucida thickness (ZPT) were taken at five different sites (in micrometers). The mean ZPT is 18.08 μm and the SD is 3.74 μm, which reflects considerable ZPT variation. Fertility and Sterility 2012 98, 77-83DOI: (10.1016/j.fertnstert.2012.04.015) Copyright © 2012 American Society for Reproductive Medicine Terms and Conditions