Ключевые слова: anabolic, analyzing, atoms, background, blood, carbon, care, chemical, chemistry, compound, concept, drawing, estradiol, estrogen, estrogenic hormone, exam, experiment, female, formula, graphic design, health, hormone, hormones, laboratory, male, man, medical, medicine, menopause, molecule, oestrogen, ovary, oxygen, pill, pregnancy, progesterone, research, scientific, sex, sexual, steroid, structural, structure, symbol, test, testosterone, two, urine, woman,