<unk>  is a serous fluid made by the peritoneum in the abdominal cavity which lubricates the surface of tissue that lines the abdominal wall and pelvic cavity. It covers most of the organs in the abdomen. An increased volume of<unk>  is called ascites. Sampling of<unk>  is generally performed by paracentesis.
Peritoneal fluid
Amniotic fluid
Body fluid
Tubular fluid
Fluid compartments
Peritoneal washing
Urine
Feces