title: [Isolation and study of biophysical properties of oncornaviruses type A and C minimal forms].
abstract: The method of differential centrifugation was used for concentration and purification of the minimal form of oncornaviruses type A and C. The structures showed heterogeneous distribution in sucrose density gradient and formed a peak in the zone of 1.135 g/ml. Electron microscope examinations of negatively stained preparations showed that the size of the minimal forms of oncornaviruses type A and C was 25-60 nm, the diameter of nucleoids 10-30 nm.
mesh_terms: D002460:Cell Line; D002499:Centrifugation, Density Gradient; D009858:Oncogenic Viruses / Q000302:isolation & purification / Q000648:ultrastructure; D012190:Retroviridae / Q000302:isolation & purification / Q000648:ultrastructure
vernacular_title: Vydelenie i izuchenie biofizicheskikh svoĭstv minimal'nykh form onkornavirusov tipa A i C