B-Cells

  • Viruses and Vaccines

    Young Astronomers Blog, Volume 29, Number 11. A pandemic has engulfed the world! Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a virus that can produce a respiratory disease called COVID-19. Viruses A virus is a microscopic germ made up of genetic material (DNA or RNA. It is covered by a capsid (shell) of protein.…