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-2 and
-Globulin Fractions of Human Tuberculous SeraFrom the Department of Pediatrics, Long Island Jewish Hospital, New Hyde Park, New York
Abstract
Human tuberculous and nontuberculous sera were fractionated by means of the continuous flow paper electrophoresis method. Precipitin tests were then performed, using the
-2 and
-globulin fractions as the sources of antibody, with OT, PPD, and an unheated culture filtrate of tubercle bacilli as the sources of antigen. Both the tuberculous and control sera gave negative results before fractionation. After fractionation, the control sera remained negative. Of the 14 patients' sera, 12 became positive, 7 with both fractions, 3 with
-globulin alone and 2 with
-2 globulin alone. The
-2 globulin fraction, in those cases where both were positive, generally precipitated earlier than the
-globulin fraction.
In a comparison between the agar doublediffusion test with whole serum and the precipitin test with fractions of the same serum, the latter was positive in seven out of eight samples, whereas the former was positive in three out of the eight.
Footnotes
1 This study was supported by Research Grant E-2482 from the Institute of Allergy and Infectious Diseases, National Institutes of Health, United States Public Health Service.
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