| BBC News Health - Human Gland evolved from Gills
The human parathyroid gland, which regulates calcium levels, probably evolved from fish gills, say researchers. (December 7, 2004) |
| Endocrine Surgeon: Parathyroid
Includes a history, symptoms, diagnosis, and related topics done in a easy to read format. |
| Parathyroid.com
Discusses diseases, symptoms, tests, and treatments, including mini-surgery. |