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In 1946, Mosley and Wyc]co//reported that electron micrographs of the influenza virus strain PR 8 showed a small proportion of short filaments amongst the spherical particles. Three years later Dawson and El]ord (1949) described the use of red cell ghosts to adsorb viruses of the influenza group (Myxovirus) as a preliminary to electron microscopy. They(More)