It’s NOT a documentary about Abe Lincoln…
A biofilm is any group of microorganisms in which cells stick to each other and can adhere to a surface. These cells are frequently embedded within a self-produced matrix. Biofilm extracellular polymeric substance, which is also referred to as a slime, is a conglomeration composed of extracellular DNA, proteins, and polysaccharides. Biofilms may form on non-living surfaces (not just living) and can be prevalent in industrial and hospital environments as well as in nature.
Formation of a biofilm begins when free-floating microorganisms attach to a surface. If these first colonists are not immediately separated from the surface, they can anchor themselves more permanently using cell adhesion structures such as pili.Biofilm
Some species are not able to attach to a surface on their own but are instead able to anchor themselves to the matrix or directly to earlier colonists. Once colonized, the biofilm grows through a combination of cell division and recruitment.
When a biofilm is established, it may only change in shape and size. During this final phase, dispersion enables biofilms to spread and colonize new surfaces. Dispersed cells are found to be highly virulent against macrophages. (A macrophage is a type of white blood cell that cleans the body of unwanted microscopic particles, such as bacteria and dead cells.) They can be irritants or the source of infections, some even deadly (like Legionella pneumophila, the organism responsible for Legionnaire’s disease).