The Morphogenesis of Simian Foamy Agents

摘要: Summary The morphogenesis of a type 1 foamy agent (strain mk5) propagated in HEp2 cells was examined using ultrathin sections. The virus consisted nucleoid (350 A) surrounded by two shells 600 A and 900 diameter. inner shell the (together making spherical internal component) appeared cytoplasm budding became enveloped morphologically altered cell membrane which bore projections. staining properties depended on method fixation. Inclusions seen infected are described. Strain mk5 indistinguishable from strain 2 virus.