Flattened squamous cells tend to be more immune to the two abrasion and an infection.[42] The permeability on the epithelium allows for a successful reaction from the immune system due to the fact antibodies as well as other immune components can easily get to the floor. • Sept. 20, 2001: https://kameronjszkr.blogitright.com/31520098/facts-about-terror-us-revealed