Ключевые слова: analysis, analyzing, antibodies, assistant, bacteria, beaker, blood, checked, checking, close up, concentration, concept, copyspace, equipment, examining, experiment, gloves, hand, healthcare, image, immunity, individual, lab, laboratory, liquid, male, mark, marker, marking, medical, medicine, microscope, negative, people, professional, quality, research, result, sample, scientific, scientist, study, test, testing, tube, virus, work, working,