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J Virol. 1968 August; 2(8): 836-849
Copyright © 1968 American Society for Microbiology. All Rights Reserved.

Purification of Rabies Virus Grown in Tissue Culture

Frantisek Sokol, Ernest Kuwert, Tadeusz J. Wiktor, Klaus Hummeler and Hilary Koprowski

The Wistar Institute of Anatomy and Biology, the World Health Organization International Reference Center for Rabies at the Wistar Institute, and The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104

ABSTRACT

Extracellular rabies virus, grown in monolayer cultures of BHK21 cells in the presence of medium supplemented with bovine serum albumin, was purified by the following procedure. Virus was precipitated from infectious tissue culture fluid by zinc acetate and was resuspended in a solution of ethylenediaminetetraacetate. The suspension was filtered through a Sephadex column and was treated with ribonuclease and deoxyribonuclease. The virions were then pelleted by centrifugation at high speed and were resuspended in buffer solution. Banding of the virus by centrifugation in a sucrose density gradient was the final step in the purification procedure. Purified preparations contained bullet-shaped virus particles of variable length and little (up to 5%) contaminating host-cell material. Most of the virions were "complete", i.e., 180 nm long, but some virus particles were shorter. The length distribution of the virions was nonrandom. Shorter virions seemed to be noninfectious and showed markedly decreased hemagglutinating activity. The complement-fixing activity and the ribonucleic acid to protein ratio of the virions were not related to the length of the virus particles. Although the properties of extracellular and intracellular viruses were similar, the procedure was not suitable for purification of intracellular rabies virus.

J Virol. 1968 August; 2(8): 836-849
Copyright © 1968 American Society for Microbiology. All Rights Reserved.





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Copyright © 1968 by the American Society for Microbiology. All rights reserved.