AdvertisementA tantalizing clue to why omicron is spreading so quicklyDecember 15, 2021Michaeleen DouclefffacebookEmailA colorized scanning-electron-microscope image shows SARS-CoV-2 (the round blue objects) emerging from cells cultured in the lab. SARS-CoV-2 is the coronavirus that causes the disease COVID-19. (NIAID-RML/Science Source)
