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Original Article

A New Co-factor (AC-factor) in the Rose Test System for the Determination of the Rheumatoid factor

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Pages 375-377 | Received 13 Feb 1968, Accepted 07 Apr 1968, Published online: 08 Jul 2009
 

Abstract

Indications were found that when measuring rheumatoid factor in the Rose hemagglutination test system, a co-factor (AC-factor) augments the agglutination. It is a low molecular substance, probably a small peptide. It was found to be present in sera from patients with rheumatoid arthritis and also in sera from the two healthy persons tested.

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