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flagellum
(redirected from flagellar)

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flagellum

(Plural flagella) small hairlike organ on the surface of certain cells. Flagella are the motile organs of certain protozoa and single-celled algae, and of the sperm cells of higher animals. Unlike cilia, flagella usually occur singly or in pairs; they are also longer and have a more complex whiplike action.

Each flagellum consists of contractile filaments producing snakelike movements that propel cells through fluids, or fluids past cells. Water movement inside sponges is also produced by flagella.



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? Mentioned in ? References in periodicals archive
 
The evidence in fact shows that several flagellar proteins once functioned as part of a molecular pump in the bacterial cell's membrane.
The Best American Science Writing 2006 by Krause, Kenneth W. / The Humanist
Use of the flagellar H7 gene as a target in multiplex PCR assays and improved specificity in identification of enterohemorrhagic Escherichia coli strains.
Shiga-toxigenic Escherichia coli O157 in agricultural fair livestock, ... by Durso, Lisa M. / Emerging Infectious Diseases
The percentage of motile sperm was counted in a [micro]-Cell chamber (Overstreet and Brazil 1997) and refers to the percentage of sperm with any flagellar movement, whether twitching or progressive.
Semen quality in relation to biomarkers of pesticide exposure by Overstreet, James W. / Environmental Health Perspectives
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