title: Structure of infectious bursal disease virus.
abstract: Infectious bursal disease virus of chickens was purified, and its structure was examined by the negative-staining technique in the electron microscope. The buoyant density of infectious bursal disease virus in CsCl was found to be 1.34 g/cm(3). The morphological details suggest that the capsid of the virion consists of a single layer of 32 capsomeres arranged in 5:3:2 symmetry. The virion measured about 55 nm in diameter and had no envelope.
mesh_terms: D000818:Animals; D002458:Cell Fractionation; D002499:Centrifugation, Density Gradient; D002642:Chick Embryo; D002645:Chickens; D003080:Cold Temperature; D046508:Culture Techniques; D005347:Fibroblasts; D008854:Microscopy, Electron; D010772:Phosphotungstic Acid; D011489:Protein Denaturation; D012367:RNA, Viral; D012087:Reoviridae / Q000302:isolation & purification / Q000648:ultrastructure*; D013194:Staining and Labeling; D014316:Tritium; D014529:Uridine; D014764:Viral Proteins
chemical_list: D012367:RNA, Viral; D014764:Viral Proteins; D014316:Tritium; D010772:Phosphotungstic Acid; D014529:Uridine