Epstein-Barr viruses, EBV. Coloured transmission electron micrograph of Epstein-Barr viruses in Burkitt's lymphoma, seen as circles with central, dark staining (red) nucleic acid (DNA). EBV, also known as human herpes virus 4, is 1 of 5 herpes viruses that attacks humans. In Europe & US infection may produce glandular fever; in Central Africa EBV infection may lead to Burkitt's lymphoma (a facial cancer in children). In both infections, the virus infects one type of white blood cell, the B lymphocytes. Infection with EBV is common & usually harmless; additional factors potentiate the development of more serious diseases. Magnification: x81,000 at 6x4.5cm size.
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