Wat are some uses for leeches other then for blood clots?!

Wat are some uses for leeches other then for blood clots?

i havea test tomorrow

"Leeches can be useful after the transplantation and reattachment of tissues."

http://www.chevroncars.com/learn/wondrou...

"Surgeons who do plastic and reconstructive surgery find leeches especially valuable when regrafting amputated appendages, such as fingers or toes."

http://www.fda.gov/fdac/features/2004/50...

"Studies led by Andreas Michalsen, a researcher at the University of Duisburg-Essen in Germany, suggests leech therapy may lessen the pain and inflammation associated with osteoarthritis, a debilitating disease where bones can grind against one another because the cartilage has been worn down."

http://www.livescience.com/humanbiology/...

There is more detailed information at all of the sites provided above. Good luck on your test.....