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wood prints pathogen wood prints severe acute respiratory syndrome wood prints label wood prints color image wood prints horizontal wood prints membrane wood prints receptor wood prints respiratory system wood prints 2020 wood prints human tissue wood prints illness wood prints virus wood prints microbiology wood prints text wood prints genetic mutation wood prints

drawings pathogen drawings severe acute respiratory syndrome drawings label drawings color image drawings horizontal drawings membrane drawings receptor drawings respiratory system drawings 2020 drawings human tissue drawings illness drawings virus drawings microbiology drawings text drawings genetic mutation drawings

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Illustration of the spike protein (red) from the new variant B117 of the SARS-CoV-2 coronavirus, the cause of the respiratory illness Covid-19. The main mutations of the new variant are labelled. The spike protein binds to angiotensin converting enzyme 2 (ACE2, blue) in the host cell membrane, mediating viral entry to the host cell. B117 was first identified in the UK in December 2020 and has since been found in other countries. B117 spreads between people much more quickly than other strains, but does not appear to cause more severe disease.

Image provided by Getty Images.