Aggregative Adherence Fimbriae I (AAF I) causes aggregation of the bacterial cells. These aggregate on small intestinal cells and cause mucous secretion which produces a biofilm. Enteroaggregative heat stabile toxin is an STa like toxin, and plasmid encoded toxin can also be present.
1 Umbilical hernia is a bulge around the belly button. It occurs when the muscle around the belly button does not close completely after birth.  Inguinal hernia is a bulge in the groin. It is more common in men.
There are many different types of hernias. The main types are inguinal hernia (groin), umbilical hernia (belly button hernia) and incisional hernias. A patient will first notice a bulge that can increase in size if it is left untreated. The hernia can sometimes cause pain and possibly involve intestines that can twist inside the hernia sac.