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E RACKER

Publications and source records attributed to E RACKER.

At least 73 records · Page 4Linked to original sources

Inhibition of Theiler's encephalomyelitis virus (GDVII strain) of mice by an intestinal mucopolysaccharide. II. Purification and properties of the mucopolysaccharide.

A mucopolysaccharide inhibitor of Theiler's GDVII virus has been purified from intestinal tissue of adult mice. The purified material has been shown to consist chiefly of carbohydrate. Following acid hydrolysis of the inhibitor, several amino adds were found to be present. The carbohydrate components shown to be present thus far are galactose, hexosamine, N-acetylhexosamine, methylpentose, hexurornic acid; an indication has been obtained that sedoheptulose is also present. The available evidence strongly suggests that this mucopolysaccharide, and not some other substance present in minute amounts, is the inhibitor of the GDVII virus.

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Susceptibility of mice free of Theiler's virus (TO strain) to infection with TO virus.

A method for the establishment and maintenance of a colony of mice free of Theiler's (TO) virus has been described. This colony has been maintained since 1947 with but one instance of contamination in 1948. Studies on the susceptibility of these mice to TO virus show that smaller doses are required to establish an infection of the intestinal tract than of the CNS. A mutant strain of TO(B) virus has been isolated which, following oral administration to mice free of TO virus, is able to cause infection of the CNS with paralysis. When fed to stock mice that carry TO virus, this TO(B) strain does not cause paralysis or other signs of CNS infection.

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