Ключевые слова: anatomy, biology, body, cell, chromosome, cycle, development, diploid, division, egg, estrogen, female, fertility, fertilization, follicle, gamete, gametes, gametogenesis, haploid, health, hormone, human, infertility, male, man, medical, meiosis, mitosis, normal, oocyte, oogenesis, oogonium, ovary, ovum, polar, pregnancy, production, reproduction, reproductive, seminiferous, sexual, sperm, spermatid, spermatocyte, spermatogenesis, stem, system, tubule, vector, woman,