Precipitation of streptococcal peptidoglycan by human sera: influence of anti-immunoglobulins.


Antibodies to streptococcal peptidoglycan (PG) were detected by gel-precipitation in 38% of sera from blood donors and in 71% of sera with a Waaler-Rose test titre of greater than or equal to 1:64. Twenty-six rheumatoid arthritis sera revealed patterns of interference with complete or partial fusion between PG and aggregated human IgG while none of the sera… (More)


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