Abstract
Summary
A sample of gamma globulin, refined and concentrated about 23-fold from pooled adult human plasma, was tested for neutralizing antibodies against representatives of three distinct antigenic types of poliomyelitis virus, Brunhilde, Lansing, and Leon. The neutralizing potency was high against all three viruses. A dilution of the globulin solution of 1/100 neutralized 100 PD50 of virus in almost every instance. A dilution of 1/1000 failed to neutralize 100 PD50 of virus.
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