[The problem of the stability of organisms after cryopreservation (fungi as an example)].

The results of research on the consequences of cryoconservation of fungi indicating the stability of their morphology are reviewed, and a number of facts indicating the changes in the properties of the fungus and the mutagenicity of cryopreservation are presented. The investigations of the last ten years confirm the Rosanov's hypothesis according to which cryoconservation must lead to an increase in the reserve of the hereditary variation of organisms.