Ключевые слова: analyze, bearded, biochemistry, biology, biotechnology, chemistry, colleagues, contented, darkhaired, doctor, examine, experimental, extraction, eyeglasses, glassdropper, gloves, indoors, investigation, lab coat, laboratory, liquid, man, medical, medical sample, microbiology, microscope, occupation, pipette, place of work, research, science, scientist, sterile, success, test tube, testing, transparent, virology, woman, working,