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![E. coli fimbriae](../../../../../../../../../figures.boundless-cdn.com/11999/full/e.-coli-fimbriae.jpg)
E. coli fimbriae
In bacteriology, a fimbria (plural fimbriae; abbreviated FIM) is an appendage composed of curlin proteins that can be found on many Gram-negative and some Gram-positive bacteria that is thinner and shorter than a flagellum. This appendage ranges from 3-10 nanometers in diameter and can be up to several micrometers long.
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