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Our Body's 'Junk Parts' Are Actually Hard At Work!
The researchers have found that, more often than not, some of these "junk parts" are actually hard at work.
Jeffrey Laitman, director of anatomy and functional morphology at New York City's Mount Sinai School of Medicine, says that history is littered with body parts that were called "useless" simply because medical science had yet to understand them.
In a new study, the researchers have found that spleen might have a critical role to play in healing damaged hearts.
Spleen-the kidney shaped organ tucked into the upper left of a person's abdomen-helps spot infections and filters out red blood cells that are damaged or old. However, it is considered as nonessential, and one can live even without it.
But the new study in mice discovered that the spleen stores monocytes, white blood cells essential for immune defense and tissue repair.
Previously, scientists had thought monocytes were made only in bone marrow, like other types of white blood cells, and were "stored" in the bloodstream.
In fact, the spleen is the source of 40 to 50 percent of the monocytes involved in nursing lab mice back to health after a heart attack, said study co-author Filip Swirski of Massachusetts General Hospital's Center for Systems Biology in Boston.
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