Ключевые слова: 40s, african american, analysing, black, blood, caucasian, close up, cure, face covering, face mask, female, focus on foreground, forties, front view, health, lab, laboratory, medical, medicine, microscope, mixed race, occupation, one person, pandemic, people, person, ppe, researching, safety glasses, sample, science, scientist, studying, test tube, testing, vaccine, variant, vertical, woman, women, worker, working,