Many different types of algae can cause harmful algal blooms. However, three types —cyanobacteria, dinoflagellates, and diatoms—cause most blooms that make people and animals sick.
This negative stained transmission electron microscopic (TEM) image showed recreated 1918 influenza virions that were collected from the supernatant of a 1918-infected Madin-Darby Canine Kidney (MDCK) cell culture, 18 hours after infection.
