[The correlation of the degree of thermoresistance of the cells of definitive tissues and oocytes in different individual frogs].

Larvae with the increased thermoresistance develop from frog oocytes at thermal selection. Thermoresistance of different tissues of adult frog positively correlate with the thermoresistance of eggs. In natural conditions, thermal selection of eggs may serve as factor that determines the formation of cell thermoresistance in developing organisms.