Syväjäädytyslämpötilojen

Syväjäädytyslä is a Finnish term that translates to cryopreservation in English. It refers to the process of preserving biological materials, such as cells, tissues, or entire organisms, at very low temperatures, typically using liquid nitrogen at -196 degrees Celsius (-320.8 degrees Fahrenheit). The goal of syväjäädytys is to stop all biological activity, effectively pausing biological processes without causing damage, allowing for long-term storage and potential future revival.

The process involves several key stages. First, the material to be preserved is treated with cryoprotective agents, which are substances that prevent the formation of ice crystals within cells, as these crystals can cause severe damage. Then, the material is cooled rapidly to extremely low temperatures. This rapid cooling is crucial for minimizing cellular damage. Once frozen, the material can be stored indefinitely as long as the low temperature is maintained.

Syväjäädytys has a wide range of applications. In medicine, it is used for preserving sperm, eggs, and embryos for fertility treatments, as well as for storing blood stem cells for transplantation. It is also employed in scientific research for preserving cell lines, tissues, and microorganisms for future study. While the concept of syväjäädytys of whole humans after death, often referred to as human cryopreservation, exists, it remains a highly speculative and experimental field with significant scientific and ethical challenges, and there is no known case of successful revival of a cryopreserved human. The technology primarily focuses on preserving individual cells and smaller biological samples.