#omentum  a fold of peritoneum supporting the viscera
  supertype:  #peritoneum  a transparent membrane that lines the abdominal cavity in mammals and covers most of the viscera
  subtype:  #greater_omentum__greateromentum__gastrocolic_omentum__gastrocolicomentum__caul  part of the peritoneum attached to the stomach and to the colon and covering the intestines
  subtype:  #lesser_omentum  a part of the peritoneum attached to the stomach and liver and supporting the hepatic vessels

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