cryopreservation
Pronunciation: cry-oh-prez-er-VAY-shun
The process of preserving reproductive cells, tissues, or embryos at extremely low temperatures for future use in fertility treatments.
Full Definition
Cryopreservation is a technique used in reproductive medicine to preserve gametes (sperm and oocytes), embryos, or reproductive tissues by cooling them to sub-zero temperatures, typically using liquid nitrogen at -196°C. This process allows for long-term storage while maintaining cellular viability for future use in assisted reproductive procedures. The technique involves controlled cooling rates and the use of cryoprotectants to prevent ice crystal formation that could damage cellular structures. Modern protocols include both slow-freezing and vitrification methods, with vitrification becoming increasingly preferred for oocyte and embryo preservation due to improved survival rates.
Usage
Usage note: Specify the method (slow-freezing vs. vitrification) when documenting procedures.
In Context
- "The patient opted for oocyte cryopreservation prior to beginning chemotherapy treatment." — Fertility preservation consultation
- "Embryo cryopreservation protocols were updated to include improved vitrification media." — Laboratory procedure manual