Immunization of Mice Against Encephalomyocarditis Virus I. Purification, Concentration, and Inactivation of Encephalomyocarditis Virus

AUTOR(ES)

Bogaerts, W. J. C.

RESUMO

Methods are described for the concentration, purification, and inactivation of encephalomyocarditis virus grown in L-cell suspension cultures. Virus concentrates were obtained by the precipitation of crude virus lysates with polyethylene glycol and were purified by Genetron extraction. After column chromatography approximately 70% recovery of infectivity and hemagglutination (HA) activity was found. Exposure of the purified virus suspensions to ultraviolet light resulted in reduction of the infectivity by a factor of 109 with little or no loss of HA activity. The preparations are being evaluated as vaccines.

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