Wednesday, August 5, 2009

The purpose of the spleen

Very often, when an organ seems to be useless, it probably is under most circumstances. However, they may be a matter of life or death in certain circumstances encountered only rarely. For example, the appendix seems to be a reservoir for gut bacteria, which can be wiped out from time to time.

Researchers have now shown that the spleen is a reservoir for immune system cells called monocytes, and that in the event of serious trauma like a heart attack, gashing wound, or microbial invasion, the spleen will disgorge the monocytes into the bloodstream to tackle the crisis.

http://www.nytimes.com/2009/08/04/science/04angier.html?_r=1&em


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