Ключевые слова: adult, analysis, background, bacteria, biochemistry, biology, biotechnology, blood, chemical, chemistry, clinic, clinical, closeup, development, discovery, doctor, examination, female, gloves, hands, health, hospital, indoors, industry, instrument, lab, laboratory, medic, medical, microbiology, patient, people, pharmacology, research, sample, science, scientist, table, taking, test, testing, uniform, virus, white, woman, women, worker, young,