| 单词 | germinal vesicle |
| 释义 | > as lemmasgerminal vesicle germinal vesicle n. [probably after German Keimbläschen (1804 with uncertain sense, 1828 or earlier in embryology)] †(a) the embryonic blastoderm or blastula (obsolete rare); (b) the nucleus of an ovum or oocyte, (in later use) spec. that of a developing oocyte at the stage immediately preceding meiosis. ΚΠ 1834 Periscope Apr. in Medico-chirurg. Rev., & Jrnl. Pract. Med. 20 510/1 The vitelline membrane has meanwhile increased in volume, much more in proportion than the germinal vesicle which it incloses. 1851 S. P. Woodward Man. Mollusca i. 51 On one side of the yolk is a pellucid spot, termed the germinal vesicle, having a spot or nucleus on its surface. 1947 A. D. Imms Outl. Entomol. (ed. 3) iii. 79 The germinal vesicle divides twice and the daughter nuclei thus produced are expelled from the ovum as the polar bodies. 2009 Yen & Jaffe's Reprod. Endocrinol. (ed. 6) iii. xxix. 740/2 Immature oocytes at prophase I exhibit a germinal vesicle. < as lemmas |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。