[Growth of oocytes and follicles in Tylopoda]

The investigation of the growth of oocytes by methods of total determination of the number of normally developing and atretic folliculi and by specific histochemical methods allows to follow the succession of correlative changes between the egg-cell growth rate and the complication of its trophicity and the folliculum as a whole. The species peculiarities of the oocyte growth in the secondary and tertiary follicles and histochemical parameters of their maturation are found.