Related Experiment Video
Updated: Sep 25, 2026

Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives
Published on: September 16, 2021
[In vitro fertilization in women over the age of 40]
Abstract:
IVF practice is increasing for women aged over fourty, in France. Analysis shows that when women's age increases, stimulation protocols with GnRH analogues using a short blocking period or "classical" protocols (without GnRH) are more and more used. However, the highest pregnancy rates are still obtained for protocols using GnRH analogues with a long blocking period. The proportion of the stimulation regimen using pure FSH is also increasing, but pregnancy rates do not show any difference between these protocols and those using hMG.
Related Concept Videos
Meiosis II
Oogenesis
Meiosis vs. Mitosis
Before the start of mitosis and meiosis I, the cell synthesizes DNA, resulting in two homologous copies of each chromosome. DNA synthesis is...
In Vitro Fertilization
The IVF process begins with ovarian stimulation, during which reproductive endocrinologists prescribe hormonal medications to stimulate the ovaries to produce multiple eggs instead of the single...
Menopause
Infertility in Females
Endometriosis, a condition characterized by abnormal growth of endometrial...

