BSIP VEM / SCIENCE PHOTO LIBRARY BSIP VEM / SCIENCE PHOTO LIBRARY
Hepatitis B virus. Coloured Transmission Electron Micrograph (TEM) of Hepatitis B virus particles. Here, the blue spheres, known as Dane particles, are the complete virus, and measure about 40nm across. The smaller green spheres and rods are probably pieces of self-assembled surplus coat protein. Hepatitis B virus, a hepadnavirus, is the cause of "serum hepatitis" or hepatitis B. The virus attacks the liver producing inflammation, flu-like symptoms, followed by jaundice. Hepatitis B is a sexually transmitted disease. It is also spread by infected blood through blood trans- fusions, tattooing, acupuncture, & needle sharing by intravenous drug users. Magnification unknown.
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