Fatal attachment: How pathogenic bacteria hang on to mucosa and avoid exfoliation

Mucous surfaces in the nose, throat, lungs, intestine, and genital tract are points of first contact for many pathogens. As a defensive strategy, most animals (and humans) can rapidly exfoliate these surfaces (i.e., shed the surface layer) to get rid of any attached attackers. A study reveals a common strategy by bacteria to prevent exfoliation and so gain extra time to colonize the mucosa or penetrate the mucosal barrier.