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Category:GO:0097228 ! sperm principal piece

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DAG for GO:0097228id: GO:0097228

name: sperm principal piece
namespace: cellular_component
def: "The segment of the sperm flagellum where the mitochondrial sheath ends, and the outer dense fibers (ODFs) associated with outer axonemal doublets 3 and 8 are replaced by the 2 longitudinal columns of the fibrous sheath (FS) which run the length of the principal piece and are stabilized by circumferential ribs. The principal piece makes up ~2/3 of the length of the sperm flagellum and is defined by the presence of the FS and of only 7 (rather than 9) ODFs which taper and then terminate near the distal end of the principal piece." [GOC:cjm, MP:0009836]
is_a: GO:0110165 ! cellular anatomical entity
relationship: part_of: GO:0036126 ! sperm flagellum

AmiGO <GOterm>GO:0097228</GOterm>
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Pages in category "GO:0097228 ! sperm principal piece"

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