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pilus

Pronunciation: pi'lus, pi'li

Definition: A fine filamentous appendage, somewhat analogous in function to the flagellum, which occurs on some bacteria. Although they can be chemically similar to flagella, pili consist only of protein and are shorter, straighter, and more numerous. Specialized pili (F pili, I pili, and other conjugative pili) seem to mediate bacterial conjugation and bacterial attachment to host cells during the infective process.

Synonym(s): hair1

Synonym(s): fimbria2

[L.]

See Also: conjugative plasmid

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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