among 48 adults without a history of tetanus immunization , we found with the aid of indirect hemagglutination test 20 individuals with protective tetanus antibody titers , 23 with low levels of antitoxin ( under 0,1 i.u./ml ) and 5 devoid of tetanus antitoxin .
C0003445
antitoxin
C0039615
tetanus antitoxin