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.
Types of Hernias. There are two general types of hernias: abdominal and groin. Abdominal hernias usually form around the navel (umbilical hernia), at the site of previous surgical incisions (incisional hernia), or in the upper abdomen at the midline (epigastric hernia).