The immunofluorescent complement technique was found to be useful for detecting anti-HBc. The technique is relatively easy to apply and sensitive, and can also be used for detecting HBcAg in liver tissues, although the procedure is semi-quantitative.
The incidence of anti-HBc by the technique was 65.7% in 105 patients with various liver diseases. Anti-HBc was detected by the method in 100% of 27 cases with HBsAg, in 74.1% of 28 cases with anti-HBs and in 44.0% of 50 cases without HBsAg and anti-HBs. Patients of chronic hepatitis with sublobular hepatic necrosis had a high incidence of anti-HBc (92.3%).
The incidence of anti-HBc was not affected by the history of blood transfusion or jaundice in the patients, and by the elevation of s-transaminase in the donors.
Presence of anti-HBc does not directly effect the clinical onset and prognosis of viral hepatitis, type B and is a good marker to differentiate it from non-B hepatitis. It is speculated that anti-HBc might be an infectious antibody.
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