Biofilms are a collective of 1 or greater styles of microorganisms that can grow on many exclusive surfaces. Microorganisms that shape biofilms include bacteria, fungi and protists. One not unusual example of a biofilm dental plaque, a slimy buildup of bacteria that bureaucracy on the surfaces of enamel. those adherent cells end up embedded inside a slimy extracellular matrix this is composed of extracellular polymeric substances (EPS). The cells in the biofilm produce the EPS additives, which might be usually a polymeric conglomeration of extracellular polysaccharides, proteins, lipids and DNA. due to the fact they have 3-dimensional structure and represent a community lifestyle for microorganisms, they have been metaphorically described as "cities for microbes".