UltraCruz® Cryopreservation Media, also known as Cell Freezing Media, is a proprietary blend of cryoprotective agents for guarding cells against rapid freezing during freeze down, which results in formation and growth of ice crystals that damage cells. Cryopreservation Media allows slower freezing rates reducing injury to cells and protects them for long term viability. UltraCruz® Cryopreservation Media is developed for optimizing growth of hybridoma cell lines.