CENTRE FOR INFECTIONS / PUBLIC HEALTH ENGLAND / SCIENCE PHOTO LIBRARY CENTRE FOR INFECTIONS / PUBLIC HEALTH ENGLAND / SCIENCE PHOTO LIBRARY
SARS virus particle, coloured transmission electron micrograph (TEM). Severe acute respiratory syndrome (SARS) is an often fatal lung disease that first appeared in China in 2002. The SARS virus is a coronavirus. Coronaviruses are named for their corona (crown) of surface proteins (orange) that are used to attach to and penetrate a host cell. Once inside a cell, the virus particles (virions) use the cell machinery to make more copies of themselves. Magnification: x213,000 when printed 10 centimetres high.
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