Vaccinia virus particles (VV), coloured transmission electron micrograph (TEM). VV is composed of a DNA (deoxyribonucleic acid) core, surrounded by a

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Vaccinia virus particles (VV), coloured transmission electron micrograph (TEM). VV is composed of a DNA (deoxyribonucleic acid) core, surrounded by a protein coat (bright green) and a lipid envelope (dark green). Vaccinia causes cowpox, a disease of cattle and humans, which produces skin lesions. This variant is a vaccine strain, used to vaccinate against smallpox, a related but more deadly human disease. VV DNA is also used in gene therapy and genetic engineering as a carrier for genes. Magnification: x67,000 when printed 10 centimetres tall.

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Size: 3750px × 4787px
Photo credit: © DR GOPAL MURTI/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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