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flagellum

Pronunciation: fla-jel'um, -a

Definition: A whiplike locomotory organelle of constant structural arrangement consisting of nine double peripheral microtubules and two single central microtubules; it arises from a deeply staining basal granule, often connected to the nucleus by a fiber, the rhizoplast. Although characteristic of the protozoan class Mastigophora, comparable structures are commonly found in many other groups, in sperm.

[L. dim. of flagrum, a whip]

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