1. A Preliminaly Report on the Superhigh Speed Cell Freezing with Ultra Low Temperature Helium Gas(Lectures presented at the Meeting on the 30th Anniversary of Japanese Society for Research of Freezing and Drying(in part))

Abstract

A superhigh speed cell freezing system with ultra low temperature helium gas was developed. High percentage of viability of the frozen cells was obtained by rapid thawing. Occurence of an amorphous glass formation (vitrification) in the intracellular fluid of the frozen cells by this method was discussed.