Ключевые слова: adult, analysis, beaker, biochemistry, biotechnology, black, blue, caucasian, chemical, chemist, chemistry, clinical, coat, dark, discovery, doctor, equipment, experiment, experimental, expertise, female, glass, glasses, holding, lab, laboratory, liquid, looking, mask, medical, medicine, microbiology, occupation, people, person, professional, protective, research, science, scientific, scientist, test, tube, vaccine, white, woman, work, working,