DR GOPAL MURTI / SCIENCE PHOTO LIBRARY DR GOPAL MURTI / SCIENCE PHOTO LIBRARY
Herpes simplex viruses. Coloured transmission electron micrograph (TEM) of a section through a human cell infected with Herpes simplex viruses, the cause of oral cold sores and genital herpes. The inner blue area is the large cell nucleus, containing many tiny spherical viruses (green/red). Herpes simplex is one of the most common viruses to infect humans. It causes small fluid-filled blisters which, if touched, can spread the virus. In the mouth the blisters may persist for weeks. Antiviral drugs may help in the treatment of the condition. Magnification: x6000 at 6x4.5cm size.
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