Ключевые слова: analyzing, background, blood, care, chemical, clean, concepts, covid19, cure, device, diagnosis, disease, doctor, drop, education, equipment, examination, first, gloves, hand, health, healthcare, healthy, heart, help, holding, ill, injecting, injection, instrument, isolated, laboratory, liquid, material, measurement, medical, medicine, needle, pain, prevention, pulse, science, season, test, treatment, wellness, white,