Assertion: sigmoid colon's mesentery | /r/HasProperty | single organ
Facets:
Source sentences:
text: Mesentery has been known for thousands of years, however it was unclear whether mesentery is a single organ or there are several mesenteries.[better source needed]
text: In 2012 it was discovered that the mesentery was a single organ, which precipitated advancement in colon and rectum surgery and in sciences related to anatomy and development.