Ключевые слова: analysis, analyzing, bacteria, biological, black death, blood, check, clinic, clinical, cure, disease, doctor, epidemic, equipment, exam, experiment, find, health, healthy, hospital, illness, immunization, infection, lab, label, laboratory, liquid, medical, pandemic, pestis, pharmaceutical, plague, red, research, sample, science, scientific, scientist, test, test tube, therapy, treatment, tube, white, yersinia,