antibodies attacking sars-cov-2 virus, corona virus, covid-19 viruses

2019ncov ace2 alveolar antibody antigen contagious corona coronavirus cov covid covid19 cure defense diagnostic disease epidemic global human illness illustration immunity immunoglobulin immunology infection medical medicine mers microscope microscopic particle pneumonia protein receptor replication research respiratory sars sarscov2 science sickness symptoms therapy treatment vaccination vaccine viral virology virus