Vaccinia virus particles. Coloured transmission electron micrograph (TEM) of sectioned vaccinia virus particles. The genetic cores (green) are covered by membrane layers (orange) taken from the host cell that replicated the virus. Vaccinia belongs to the orthopoxvirus group. Formation of new virus particles occurs in the cytoplasm of the host cell,whereas most other viruses replicate in the cell nucleus. The vaccinia virus causes cowpox,a disease of cattle and humans,which produces skin lesions. It was first used by Edward Jenner in 1796 to protect (vaccinate) against smallpox,a related,more deadly human disease. Magnification: x70,000 when printed 10cm high | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Dowsett, A. / Public Health England |
Taille de l’image : | 3192 px × 4379 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |