Ключевые слова: age, androgen, biological, biology, body, chemical, chemistry, circuit, concept art, cycle, design, diagram, education, elements, estrogen, estrogen deficiency, female reproductive system, fertility, fertilization, flat, girl, graphic design, gynecology, health, hormone, human, icons, illustration, infertility, isolated, libido, life, medical, medicine, menopause, menstruation, modern, period, pharmaceutical, pharmacy, physiology, science, scientific, sex, sexual, signs and symbols, silhouette, structure, vector background, woman,