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Neolacto (type-2 chain)-sialoautoantigens recognized by human cold agglutinins

Neolacto (type-2 chain)-sialoautoantigens recognized by human cold agglutinins

Vox Sanguinis 59(4): 235-239

The antigens Fl and Vo, recognized by cold agglutinins, are protease-resistant differentiation antigens like I and i antigens. In contrast to Ii, Fl and Vo are sialidase-susceptible antigens like the protease-resistant Gd antigens. Because I/i antigens are branched/linear type-2 (poly-N-acetyllactosamine or neolacto series) chains which are cleaved from red cells by endo-beta-galactosidase, the effect of the enzyme on Fl, Vo and Gd antigens was studied. Fl and Gd antigens, previously shown to be sialylated branched (Fl), and linear and branched (Gd) type-2 sequences, were not inactivated on red cells by the enzyme, whereas Vo antigenicity was completely abolished. The data suggest that Vo antigen is expressed on sialylated linear poly-N-acetyllactosamine sequence.

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Accession: 040780187

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PMID: 2127328

DOI: 10.1111/j.1423-0410.1990.tb00244.x

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