Ключевые слова: 19, antibody, antigen, background, corona, coronavirus, covid, covid19, detection, diagnosis, diagnostic, disease, exam, face, flat, home, icon, igm, illustration, instruction, investigation, isolated, kit, lab, laboratory, lgm, man, medical, medicine, nasal, negative, nose, patient, pcr, people, positive, procedure, rapid, rapid test, research, result, sample, steps, swab, test, viral, virus,