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sperm annulus
Term Information
Accession
GO:0097227
Name
sperm annulus
Ontology
cellular_component
Synonyms
None
Alternate IDs
None
Definition
The ring-like, filamentous structure located at the distal end of the midpiece of the sperm flagellum; the annulus is thought to form a diffusion barrier between the midpiece and the principal piece and serve as a stabilizing structure for tail rigidity.
Source:
GOC:cjm,
MP:0009834
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