RUSSELL KIGHTLEY / SCIENCE PHOTO LIBRARY RUSSELL KIGHTLEY / SCIENCE PHOTO LIBRARY
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Ebola virus life cycle, artwork. This virus is the cause of Ebola fever. At lower left, a virion binds to the membrane of the host cell. Viral DNA (yellow strands, lower centre) is then released into the cell's cytoplasm. This DNA directs the production of new viral proteins and genetic material. The new viral proteins (orange) surround the new genetic material, and the new virus particles stack up in the cell (lower and centre right). Transmembrane proteins (purple balls) are produced, which line the cell's surface and coat the new virus particles as they emerge (upper right). Ebola fever causes haemorrhaging & central nervous system damage, and may be fatal.
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