Ключевые слова: abdomen, baby, belly, biochemistry, biology, biotechnology, birth care, cell, chain, chemistry, child, childbirth, chromosome, expecting, female, fertility, fetus, gene, genetic, gray background, hands, health, health care, helix, heredity, maternity, medicine, microbiology, molecular, molecule, molecules chain, mother, planning, pregnancy, pregnant, preparation, research, science, screening, structure, technology, woman,