KATERYNA KON / SCIENCE PHOTO LIBRARY KATERYNA KON / SCIENCE PHOTO LIBRARY
Venezuelan equine encephalitis virus, computer illustration. This mosquito-borne virus can cause fatal brain and spinal cord inflammation in horses. It can also cause a fatal fever in humans. In viruses, the capsid is the protein shell that encloses the genetic material. A capsid consists of subunits called capsomeres that self-assemble to form the shell seen here. One of the functions of the capsid is to aid the transmission of the viral genetic material into host cells.
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