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Infect Immun. 1974 May; 9(5): 952-958
Copyright © 1974 American Society for Microbiology. All Rights Reserved.

BCG Antibody Profiles in Tuberculoid and Lepromatous Leprosy

Protein Laboratory, University of Copenhagen, Denmark
Institute for Experimental Medical Research, University of Oslo, Norway
Armauer Hansen Research Institute, Addis Ababa, Ethiopia

ABSTRACT

In sera from 12 patients with polar tuberculoid leprosy, 12 with subpolar tuberculoid leprosy, and 16 with lepromatous leprosy were demonstrated a total number of 125 anti-BCG precipitins by means of crossed immunoelectrophoresis with intermediate gel. Up to 14 different precipitins were found in individual sera, and the complexity in antibody response was higher than previously realized. The specificity of 69% of the antibodies was defined, and these antibodies were titrated in three arbitrary titer units. A highly significant difference (P < 0.002) was found in antibody response between the tuberculoid and the lepromatous group. Due to simplicity, sensitivity, and high resolution, the method used is a promising tool for providing exact data to be used as guidelines for purification of important individual mycobacterial antigens. The need for reference antisera is emphasized.