sperm-aster

(redirected from sperm aster)

sperm-as·ter

(sperm'as'tĕr),
Cytocentrum with astral rays in the cytoplasm of an inseminated ovum; it is brought in by the penetrating spermatozoon and evolves into the mitotic spindle of the first cleavage division.
[sperm + G. astēr, a star (aster)]

sperm-as·ter

(spĕrm'as-tĕr)
Cytocentrum with astral rays in the cytoplasm of an inseminated oocyte; it is brought in by the penetrating sperm and evolves into the mitotic spindle of the first cleavage division.
[sperm + G. astēr, a star (aster)]
References in periodicals archive ?
We aim to: 1) Elucidate mechanisms that drive aster large-scale motion, using sperm aster migration after fertilization during which asters grow and move rapidly and persistently to the large-egg center.
Sperm aster formation and pronuclear decondensation during rabbit fertilization and development of a functional assay for human sperm.
Human sperm aster formation and pronuclei decondensation in bovine eggs following intracytoplasmic sperm injection using a Piezo-Driven Pipette: a novel assay for human sperm centrosome formation.
Intracytoplasmic sperm injection for rhesus monkey fertilization results in unusual chromatin, cytoskeletal, and membrane events, but eventually leads to pronuclear development and sperm aster assembly Hum Reprod 11:1703-1712.