| pubmed-article:7895395 | pubmed:abstractText | For rheumatoid arthritis (RA), antiperinuclear factor (APF) is as efficient a marker as rheumatoid factor (RF). However, the prevalence and significance of APF of the IgA isotype in active RA, as well as its correlation with RF-IgA, have not been determined. Our goal was to obtain information on these points. | lld:pubmed |
