title: The circular, segmented nucleocapsid of an arenavirus-Tacaribe virus.
abstract: The nucleocapsid structures of Tacaribe virus, a member of the Arenaviridae, were purified from detergent-treated virus particles by equilibrium density gradient centrifugation. Negative-contrast electron microscopy indicated that they were coiled, circular filaments. They had a mean diam. of 5 to 10 nm and two predominant length classes of 640 nm and 1300 nm were found.
mesh_terms: D001116:Arenaviridae / Q000648:ultrastructure*; D006477:Arenaviruses, New World / Q000032:analysis / Q000648:ultrastructure*; D002213:Capsid / Q000032:analysis; D012367:RNA, Viral / Q000032:analysis*
chemical_list: D012367:RNA, Viral