# sputum

> mucus that is coughed up from the lower airways

**Wikidata**: [Q259346](https://www.wikidata.org/wiki/Q259346)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Sputum)  
**Source**: https://4ort.xyz/entity/sputum


## References

1. Symptom Ontology
2. Freebase Data Dumps. 2013
3. UMLS 2023
4. Quora
5. Great Norwegian Encyclopedia
6. GF WordNet
7. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)