Coloured TEM of hepatitis B virus and its antigen

Coloured TEM of hepatitis B virus and its antigen

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Credit: DR L. STANNARD, UCT/SCIENCE PHOTO LIBRARY

Caption: Hepatitis B virus. Coloured transmission electron micrograph (TEM) of the Hepatitis B virus and its naturally occurring antigen. The blue spheres (called Dane particles) are the complete virus. Hepatitis B virus occurs typically in clusters of three types of particles (as seen here): the virus itself, with smaller spheres and rod-shaped forms made from the protein coat of the virus. The smaller non-infectious spheres (green) are anti- genically identical to the virus, and provide raw material for Hepatitis B vaccines. Infection by this virus is more serious than Hepatitis A, can be sexually transmitted, and causes chronic hepatitis. Magnification: x110,000 at 5x7cm size. Magnification; x55,000 at 35mm size.

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Keywords: antigen, biology, dane particles, hepatitis b, hepatitis b virus, microbiology, serum hepatitis, virology, virus, viruses

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