| 释义 |
epiboly
e·pib·o·ly E0174400 (ĭ-pĭb′ə-lē)n. The growth of a rapidly dividing group of cells around a more slowly dividing group of cells, as in the formation of a gastrula.
[Greek epibolē, a throwing or laying on, from epiballein, to throw on : epi-, epi- + ballein, to throw; see gwelə- in Indo-European roots.]
ep′i·bol′ic (ĕp′ə-bŏl′ĭk) adj.epiboly (ɪˈpɪbəlɪ) n, pl -lies (Zoology) embryol a process that occurs during gastrulation in vertebrates, in which cells on one side of the blastula grow over and surround the remaining cells and yolk and eventually form the ectoderm[C19: from Greek epibolē a laying on, from epiballein to throw on, from epi- + ballein to throw] epibolic adje•pib•o•ly (ɪˈpɪb ə li)
n., pl. -lies. the movement of a group of cells over a more slowly dividing group, resulting in an outer and inner layer, as in a gastrula. [1870–75; < Greek epibolḗ the act of throwing or laying on, n. derivative of epibállein to throw upon, lay on = epi- epi- + bállein to throw] ep•i•bol•ic (ˌɛp əˈbɒl ɪk) adj. epibolythe growth of part of an organism in such a way that it overlays or surrounds another. — epibolic, adj.See also: GrowthEpiboly
epiboly[ə′pib·ə·lē] (embryology) The growing or extending of one part, such as the upper hemisphere of a blastula, over and around another part, such as the lower hemisphere, in embryogenesis. Epiboly a method of gastrulation by which cells of the embryo’s animal hemisphere spread through its vegetal hemisphere, the future entoderm (in animals with meroblastic ova, the yolk). epiboly
e·pib·o·ly , epibole (ē-pib'ŏ-lē), 1. A process involved in gastrulation of telolecithal eggs in which, as a result of differential growth, some of the cells of the protoderm move over the surface toward the lips of the blastopore. 2. Growth of epithelium in an organ culture to surround the underlying mesenchymal tissue. [G. epibolē, a throwing or laying on] epiboly (ĭ-pĭb′ə-lē)n. The growth of a rapidly dividing group of cells around a more slowly dividing group of cells, as in the formation of a gastrula.
ep′i·bol′ic (ĕp′ə-bŏl′ĭk) adj.e·pib·o·ly , epibole (ē-pib'ŏ-lē) 1. A process involved in gastrulation of telolecithal eggs in which, as a result of differential growth, some cells of the protoderm move over the surface toward the lips of the blastopore. 2. Growth of epithelium in an organ culture to surround the underlying mesenchymal tissue. [G. epibolē, a throwing or laying on]epiboly the process by which a BLASTULA is converted into a GASTRULA by growth of ectoderm over the endoderm.e·pib·o·ly , epibole (ē-pib'ŏ-lē) Growth of epithelium in an organ culture to surround the underlying mesenchymal tissue. [G. epibolē, a throwing or laying on] |