Researchers discovered what may be a new organ: a network of fluid-filled spaces in connective tissues all over the body known as the interstitium, Scientific American reports.
Here are four things to know.
1. The interstitium was found below the surface of the skin, lining the digestive tract, lungs and urinary systems and surrounding muscles, according to findings published in Scientific Reports.
2. The researchers used a technique called probe-based confocal laser endomicroscopy, in which an endoscope is combined with a laser and sensors that analyze reflected fluorescent patterns, leading to a microscopic view of living tissue.
3. The researchers first used pCLE on cancer patients undergoing surgery to remove the pancreas and bile duct.
4. The fluid-filled spaces may act as shock absorbers to protect tissues during daily activities, the study authors claim.
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