Ultrastructural morphology shown by coronavirus. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282549/free-photo-image-virus-covid-scienceFree Image from public domain licenseUltrastructural morphology exhibited by coronaviruses similar to COVID-19 which became pandemic. https://www.rawpixel.com/image/2282543/free-photo-image-covid-virus-coronavirusFree Image from public domain licenseGreen coronavirus under a microscope. Original image sourced from US Government department: Public Health Image Library… https://www.rawpixel.com/image/2282451/free-photo-image-immune-cell-parasite-green-backgroundFree Image from public domain licenseLiving organisms under a microscopic view. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282440/free-photo-image-science-immune-cell-hela-cellsFree Image from public domain licenseMagnified respiratory syndrome coronavirus. 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