Cryopreservation and Thawing of Cells

Wayne M. Yokoyama, Maria L. Thompson, Rolf O. Ehrhardt

University of California School of Medicine, San Francisco, California.

Curr Protoc Immunol. 2012 Nov;99 Appendix 3:3G






Successful cryopreservation of cells requires not only that the cells be handled in a proper fashion for harvesting with equipment in place to ensure consistency, reproducibility, and sterility, but also that a correct choice and amount of cryoprotective agent is added. In general, a controlled freezing rate of 1°C/min is necessary to retain optimal viability of the recovered cells. There are many variations of cell freezing methods in use, including costly electronically regulated control rate freezers, unstandardized, passive isopropyl alcohol freezing containers, and crude rudimentary devices constructed from Styrofoam boxes or paper insulation. However, for the freezing and recovery of cell lines, primary cells, and stem cell cultures, the protocol described in this unit is simple, reproducible, and successful. Not only does it eliminate the need for isopropanol, as well as the costs and hazards associated with its use and disposal, but it provides a uniform method with improved cell viability and recovery.


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CoolCell® alcohol-free cell freezing container

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Other publications:

Standardized Cryopreservation of Human Primary Cells

Thomas V. Ramos, Aby J. Mathew, Maria L. Thompson, Rolf O. Ehrhardt

HemaCare Corporation, Van Nuys, California,  BioLife Solutions, Bothell, Washington, BioCision, Larkspur, California

Curr. Protoc. Cell Biol. 64:A.3I.1‐A.3I.8.

Standardized Cryopreservation of Pluripotent
Stem Cells

Rick I. Cohen, Maria L. Thompson,Brian Schryver, Rolf O. Ehrhardt
Rutgers University, Piscataway, New Jersey BioCision LLC, Larkspur, California

Curr Protoc Stem Cell Bio. 2014 Feb; 28 Unit 1C.14





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BioCision is a life science research and development company that develops products and solutions for process standardization throughout the healthcare industry through the application of advanced thermal regulation principles and technologies. The intuitive design and interconnectivity of BioCision products enables researchers, clinicians and manufacturers to protect the integrity of temperature-sensitive therapeutics, biological samples, and biomaterials. By comprehensively addressing temperature stability, BioCision strives to improve the success of therapeutic discovery and development and enable effective care delivery.

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