# polytene chromosome puff

> swelling at a site along the length of a polytene chromosome, thought to be the site of active transcription

**Wikidata**: [Q22330387](https://www.wikidata.org/wiki/Q22330387)  
**Source**: https://4ort.xyz/entity/polytene-chromosome-puff


## References

1. Gene Ontology release 2019-10-07
2. Foundational Model of Anatomy
3. UMLS 2023