IMMUNOLOGIC AND BIOCHEMICAL STUDIES IN INFANTS AND CHILDREN WITH SPECIAL REFERENCE TO RHEUMATIC FEVER

[摘要] Complement titers of 128 sera from 107 healthy children ranging in age from three days to 15 years are presented. The 50% hemolysis method was used. In 107 instances (83.5%), the complement titer ranged between 0.0040 Ml. and 0.0069 Ml., while eight sera (6.3%) had higher titers, and in 13 instances (10.2%), the complement activity was low. The mean titer for the entire group was 0.0053 ± 0.00115 Ml.Repeated determinations on the same individuals showed that complement activity usually remained constant over prolonged periods.Complement activity did not vary with age, sex or season of the year in which the specimens were obtained.

[学科分类] 儿科学