[The anodically moving thermolabile antigen (ATA) of Gram negative bacteria. Protection of mice by immunization with ATA (author's transl)].

Mice are protected against lethal doses of Salmonella typhi-murium by vaccination with ATA extracted from Providencia. No protective effect is observed when the S. typhi-murium strains are enterotoxigenic. Thus protection is antibacterial, but not antitoxic.