Abstract
The VH specificities of two rabbit antisera raised against the H chains of two human IgM cold agglutinins were studied with the aid of proteins on which the VH sequence data are available. They were found to recognize a new VH antigen (VHMar), which may represent a subgroup of VHI. This antigen is found on anti-Ii antibodies which have cross-reactive idiotypes. It is moderately well-expressed in normal gamma globulin and strongly expressed on 8% of unselected myeloma and macroglobulinaemia proteins. There is evidence to suggest that a proportion of the cross-reactive idiotypes among the anti-Ii antibodies involve this VH antigen.
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Selected References
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