If you’ve ever found our data helpful, please take our impact survey (15 min). Your replies will help keep the data flowing to the scientific community.


Take Survey

One of two branches of the trachea. [ http://en.wikipedia.org/wiki/Main_bronchus ]

Synonyms: extrapulmonary bronchus primary bronchus bronchus principalis major bronchus principal bronchus mainstem bronchus

This is just here as a test because I lose it