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From the Laboratory of Neurochemistry, National Institute of Neurological Diseases and Blindness, National Institutes of Health, Bethesda, Maryland
Abstract
The injection of purified gangliosides caused the production of specific antibodies in rabbits when administered with a carrier substance such as rabbit or sheep erythrocytes, Freund's adjuvant, whole human serum or bovine serum albumin. A separate antibody was also produced by the injection of erythrocytes coated with asialogangliosides. Anti-ganglioside and anti-asialoganglioside antibodies were demonstrated by hemagglutination, complement fixation and passive cutaneous anaphylaxis tests.
Gangliosides exhibited blood group M and Rho(D) activity in hemagglutination inhibition tests and some, although weaker, blood group substance A and N activity. The intact ganglioside molecule was required for blood group activity. Asialogangliosides and crystalline N-acetylneuraminic acid were inactive in this regard.
Footnotes
1 Present address: Department of Medicine, University of California, San Francisco Medical Center, San Francisco, California.
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