outer dense fiber

id: GO:0001520
name: outer dense fiber
namespace: cellular_component
type: go
obsolete: False

Description: Structure or material found in the flagella of mammalian sperm that surrounds each of the nine microtubule doublets, giving a 9 + 9 + 2 arrangement rather than the 9 + 2 pattern usually seen. These dense fibers are stiff and noncontractile.

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