Abstract
Five adenoviruses were effectively concentrated and partially purified by methanol precipitation. The soluble antigens from one adenovirus concentrate were obtained by adsorption to and elution from calcium phosphate. Formaldehyde-inactivated vaccines prepared from the virus concentrates were more antigenic in guinea pigs than a National Institutes of Health reference vaccine or one prepared from unconcentrated adenovirus. The soluble antigens also proved to be antigenic. The data indicate that adenovirus vaccines of superior potency can be prepared from concentrated virus preparations and that the extracted soluble antigens are immunogenic.
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