Volume 24, Issue 6
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



Circulating antigens were investigated, by immunodiffusion, in sera and urines from infected patients. The occurrence of a thermostable parasitic urinary antigen, called M, was demonstrated in 80% of infected patients. The incidence of M component was proportional to the fecal egg count and was inversely proportional to the age of the patient. Specific anti-M precipitating antibodies were demonstrated in 41% of sera from infected patients. A statistical correlation was found between the presence of M antigen and the level of total and anti- IgE, and also with the 24-hour intradermal test response with antigen. The specificity, the origin, and the function in the immune response of the M antigen are discussed.


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