The immunological properties of a glycoprotein fraction and of proteoglycan subunits obtained from bovine nasal cartilage by nondisruptive methods of isolation have been studied. Using the techniques of hemagglutination and hemagglutination inhibition, we found that the glycoprotein contains most of the species-specific determinants, whereas the proteoglycan subunits contain most of the cross-reacting ones.
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Ferrante et al. (1970) studied this question.
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