False-colour transmission electron micrograph of vaccinia virus. It is a member of the poxvirus family,the largest & most complex of the vertebr- ate viruses (230x300 nanometres in size). The virus particles appear brick-shaped & are made of a complex structure of membranes surrounding the genetic core of DNA - the nucleoid. Replication of the DNA & the formation of the viral progeny occurs in the host cell's cytoplasm; most other viruses replicate within the cell nucleus. The vaccinia virus causes cowpox,a disease of cattle & humans that causes skin lesions resembling those of smallpox,but without the associated systemic disturbances. Magnification: x17,500 at 35mm size. Orange tint. Original is BW print M050/091 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Dowsett, A. / Public Health England |
Bildgröße: | 4461 px × 3848 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |