Abstract
Summary
Suckling mice 5-13 days old were protected against the intraperitoneal inoculation of suckling mouse-adapted MEF1 virus by the intramuscular inoculation of human gamma globulin in amounts as small as 0.05 ml/lb 24 hours prior to the virus challenge. Human gamma globulin in an amount (0.1 ml/lb) adequate to protect against the intraperitoneal inoculation of the suckling mouse-adapted MEF1 virus did not prevent the development of active immunity against the subsequent intracerebral inoculation of Lansing virus.
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