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  • Title: [Dynamics of the accumulation of virus particles with different physico-chemical properties in FRhK-4 cells infected with hepatitis A virus].
    Author: Kusov IuIu, Nastashenko TA, Kazachkov IuA, Panina LI.
    Journal: Mol Gen Mikrobiol Virusol; 1987 Jan; (1):26-32. PubMed ID: 3031492.
    Abstract:
    The propagation time-course of hepatitis A virus (HAV, strain HAS-15) in continuous culture of the foetal rhesus monkey kidney cells (FRhK-4) was investigated. The HAV infectivity and viral RNA content in the infected cells reached the maximal level 5-8 days after infection, while accumulation of hepatitis A antigen (HAAg) continued for 2-3 weeks more. Viral particles with the densities 1.27-1.28 g/cm3 and 1.18-1.22 g/cm3 were isolated from the infected cells as well as the mature virions with the buoyant density 1.33-1.34 g/cm3 in CsCl. The concurrent accumulation of mature virus and "light" particles (1.18-1.22 g/cm3) was registered during infection. Viral particles with the density 1.27-1.28 g/cm3 accumulated predominantly from the 14th to the 21st-24th days after infection. The mature virions (1.34 g/cm3) as well as the particles with the density 1.24-1.25 g/cm3 were isolated from supernatant precipitated by ammonium sulphate. The HAAg activity of both fractions increased progressively in equal proportion in course of infection.
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