After perfusion the intestinal mesenteries were examined for residual worms under a light microscope.
Normally, the pleuroperitoneal membranes fuse with the septum transversum, oesophageal mesentery and body wall by seven weeks of gestation.
Guts were removed from fish and the mesenteries around the gut were broken.
The mesenteries were stripped and all fat was removed from the intestine.
Juveniles were free in the gut, embedded in the gut wall and encapsulated in mesenteries.
In some cases such discs were located beneath the peritoneum covering other visceral organs or in the mesentery.
The resulting defect is filled with a segment of small bowel mobilized on a segment of its own mesentery.
In the present study, anisakid nematode larvae were only found in the mesentery, and can be interpreted as harmless to humans.
