Anti-bacterial and anti-endotoxic immunity, induced by the administration of an enterobacterial vaccine

The work demonstrates that the sera of animals immunized with enterobacterial vaccine, when adsorbed on sheep red blood cells sensitized with glycolipid Re, lose their capacity of decreasing the lethal effect of Shigella sonnei endotoxin, which is indicative of the antiendotoxic action of antibodies. At the same time, immune sera obtained after immunization with enterobacterial vaccine contain antibodies having also other specificity and thus ensuring antibacterial immunity.