释义 |
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)] |