Abstract
A method is described for purifying malarial antigen from human brain. The antigen appears to be highly specific for malarial antibodies. On double diffusion in agar gel a precipitin reaction was produced only with sera from persons with malarial parasites in their peripheral blood and those with high malarial fluorescent antibody titre. No precipitin lines were formed with sera from persons who were known to be free from malarial infection.
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