BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY
Colour-enhanced Transmission Electron Micrograph of human poliovirus particles or virions, the causative agent of poliomyelitis. Polioviruses belong to the enterovirus subgroup of the picornaviruses (small RNA viruses). Infection occurs through the mouth with the virus travelling via lymph nodes to the central nervous system. Magnification: 130,000X at 6 x 8 print size.
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