[Effect of lyophilization on the free-radical state of animal cells]. / O vliianii liofilizatsii na svobodnoradikal'nye sostoianiia kletok zhivotnykh

The process of lyophylisation carried out very carefully under strictly defined conditions does not in inself bring about the changes in the parameters of the ESR signal with g approximately equal to 2.00 observed in animal cells. The free radicals responsible for the ESR signal observed under usual experimental conditions, result from a contact of the lyophylised specimen with moisture at an optimum water content of about 10%.