Poliovirus particles, TEM

Poliovirus particles. Coloured transmissionelectron micrograph (TEM) of poliovirus particles.Each virus consists of a protein coat (capsid)surrounding a core of RNA (ribonucleicacid) genetic material. Poliovirus infectschildren causing the disease poliomyelitis, orinfantile paralysis. Although it normally onlycauses a mild illness, in some cases it infectsthe central nervous system (CNS) and can causesevere damage, leading to paralysis or death.Vaccination, which started in the 1950s, has beensuccessful in controlling the disease. It has nowbeen eliminated from Europe. Magnification:x58, 000 when printed at 10 centimetres across.. Stunning Photo Gifts From Science Photo Library

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