# rheumatoid factor

> autoantibody directed against the Fc fragment of immunoglobulin G

**Wikidata**: [Q702883](https://www.wikidata.org/wiki/Q702883)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Rheumatoid_factor)  
**Source**: https://4ort.xyz/entity/rheumatoid-factor


## References

1. Freebase Data Dumps. 2013
2. Medical Subject Headings
3. [Source](https://www.medicalrecords.com/health-a-to-z/rheumatoid-factor-rf-definition/)
4. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)