The Journal of Experimental Medicine
Janeway's Immunobiology 7th Edition
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The Journal of Experimental Medicine, Vol 134, 532-552, Copyright © 1971 by The Rockefeller University Press

ARTICLE

THE INHERITANCE OF INDIVIDUAL ANTIGENIC SPECIFICITIES OF RABBIT ANTIBODIES TO STREPTOCOCCAL CARBOHYDRATES

Klaus Eichmann M.D.1 and Thomas J. Kindt Ph.D.1

1 From The Rockefeller University, New York 10021

The inheritance of individual antigenic specificities (IAS) of rabbit antibodies to the Group C streptococcal carbohydrate was demonstrated in a selectively bred rabbit family. The IAS of the antibodies from 3 proband rabbits were also observed in the Group C antibodies in as many as 7 out of 42 related rabbits, but in none of the Group C antibodies from 48 unrelated rabbits, Immunodiffusion analyses and quantitative radioprecipitin experiments revealed that this cross-specificity may be either partial or complete.

Quantitative inhibition of the precipitin reaction between the proband antibody and its antiserum by preimmune IgG revealed 30-fold differences in the proportion of molecules with cross-specificity for the proband antibody. This proportion is higher in the preimmune IgG of the proband rabbit and of those relatives which produced cross-precipitating antibodies than it is in the IgG of rabbits which had the same group a allotype, but did not produce cross-precipitating antibodies. The proportion is much lower in the IgG of rabbits with a group a allotype different from that of the proband antibody. These data suggest that serologically detected individual antigenic specificities are inherited markers of immunoglobulins.

 Submitted on April 22, 1971


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