False-colour transmission electron micrograph (TEM) of vaccinia virus particles. The 3 Virus particles (virions) visible appear brick-shaped,with a complex surface. Vaccinia belongs to the orthopoxvirus group; genetic information is in the form of DNA. Formation of viral progeny occurs in the host cell's cytoplasm; most other viruses replicate in the cell nucleus. The vaccinia virus causes cowpox,a disease of cattle. It was first used by Jenner in 1796 to protect against smallpox,a related human disease,in the process of vaccination. Magnification: x16,000 at 6x7cm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / CNRI |
Taille de l’image : | 2640 px × 3383 px |
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Property Release : | Non requis |
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