Pilli or Fimbriae
Numerous short straight and thin like fibers called pili, strick out from surface of cell wall.
Generally present in Gram negative bacteria.
Thinner and shorter than flagella.
Function of pilli
Pilli allow attachment of bacterial cell to specific surface.
Enhance bacterium's ability to colonize an area and cause disease.
Help in bacterial conjugation. (@exchange genetic material)
Help in agglutination and pellicle (membrane) formation.
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