The mature female mammal ovary extends continuously follicular development process, which is an expression of proliferation and differentiation of cells. Gene expression occurs in the ovary in a specific order based on many factors. It is known that some proteins are expressed at a specific stage of follicular development and corpus luteum luteinisation. Hormones regulate many functions are ovarian steroids, so the distribution of the receptors of these hormones is extremely important. Immunohistochemistry, in situ hybridization and biochemical analysis, analyzed together, allow for better understanding of the processes of folliculogenesis.