Root nodule | Cross section though a soybean (''Glycine max'' 'Essex') root nodule. The bacterium, ''Bradyrhizobium |
Although leghemoglobin was once thought to provide a buffer for nodule oxygen, recent studies indicate that it stores only enough oxygen to support nodule respiration for a few seconds.
After a nodule is found during a physical examination, a referral to an endocrinologist, a thyroidologist or otolaryngologist may occur.
Examples of this are Ryan Key, José José, and Julie Andrews, who lost much of their singing ability after undergoing vocal nodule surgery.