cell projection
prolongation or process extending from a cell, e.g. a flagellum or axon
bacterial-type flagellum
motor complex composed of an extracellular helical protein filament coupled to a rotary motor embedded in the cell envelope
haustorium
rootlike structure or a structure that grows into or around another structure to absorb water or nutrients
pilus
proteinaceous hair-like appendage on the surface of bacteria ranging from 2-8 nm in diameter
Type IV filament
family of cell projections including T2SS and T4P