DR LINDA STANNARD, UCT / SCIENCE PHOTO LIBRARY DR LINDA STANNARD, UCT / SCIENCE PHOTO LIBRARY
Measles virus. Coloured transmission electron micrograph (TEM) of a measles virus (rubeola), with its envelope broken exposing the nucleocapsid filaments. Nucleocapsids are protein-nucleic acid complexes that are normally coiled up into a ball, which contain the genetic material of the virus. Measles viruses are morbilliviruses, a type of paramyxovirus. Measles is highly infectious and mainly affects children, producing fever and a rash. One attack usually provides lifelong immunity.
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