Ключевые слова: adult, african, analysis, blood, busy, career, chemist, chemistry, coat, cropped, ethnic, ethnicity, expert, glasses, gloves, holding, innovation, intelligent, job, lab, laboratory, looking, male, man, medical, men, occupation, people, person, plan, planning, process, profession, professional, report, research, safety, sample, science, scientist, serious, smart, strategy, system, test, testing, work, working, workplace, young,