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Division of Biologics Standards, National Institutes of Health, 2 Bethesda, Maryland
Abstract
Rabbits were found to acquire neutralizing capacity for homotypic and heterotypic poliovirus and for ECHO 12 virus following inoculation with a single poliovirus type. The neutralizing capacity for heterotypic and heterologous viruses was shown to have properties of antibody, in that it was produced by antigenic stimulus, was demonstrated in heat-inactivated sera and was not dependent upon the cellular component of the antigen. Rabbits previously immunized with type 2 poliovirus were found to have an enhanced (anamnestic) response to the poliovirus type 1 and 3 components of trivalent vaccine when compared with the control, unsensitized rabbits. Such an anamnestic response was further evidence for the antigenic relationship of of the three poliovirus types.
Footnotes
1 Present address: Department of Medicine, Strong Memorial Hospital, Rochester, New York.
2 A division of the Dept. of Health, Education and Welfare, United States Public Health Services.
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