Researchers say they have discovered an organ called "mesentery" that is part of our digestive system, and it's been hiding in plain sight for centuries.
It was previously thought to be just a few fragmented structures in the digestive system, but scientists now say it's one continuous organ.
Right now, the function of the organ is unclear and scientists are working to figure exactly what it does.
Dr. Kevin Campbell, joins CBSN to talk about the new organ.
