**3.3 Ability to adhere to and colonize the gastrointestinal tract (GIT)**

Adherence to intestinal surfaces is one of the most important criteria for selecting strong probiotic isolates. Some probiotic strains are isolated from fermented foods that have significant adhesion by producing intestinal mucosa. Such as *Lactococcus lactis IS.16183*, *L. plantarum and Lactobacillus rhamnosus IS.7257* and inhibits the binding of *Escherichia coli* [3].
