Cryoprotectants
Cryoprotectants change the osmotic properties of the extender and the sperm cells. The osmotic pressure refers to the amount of dissolved molecules within a solution. It is related to concentration but is the sum of all the different molecules that might be dissolved in a solution. Understanding the role of osmotic pressures in and around cells is important to understand potential freezing damage. The following animated tutorial will help explain the principles of osmotic pressure and freezing.
