| 单词 | primary oocyte |
| 释义 | > as lemmasprimary oocyte primary oocyte n. Biology an oocyte that gives rise in the first division of meiosis to the secondary oocyte and a polar body; cf. secondary oocyte n. at secondary adj. 5d. ΚΠ 1897 Bull. Torrey Bot. Club 24 104 I propose to use the term[s] ‘primary sporocyte’ for the cells of the sixteen-cell stage, and ‘secondary sporocyte’ for cells of the thirty-two-cell stage. These terms are directly analogous to ‘primary’ and ‘secondary’ ‘oöcyte’, and ‘spermatocyte’ in animal cells. 1946 B. M. Patten Human Embryol. ii. 31 The primary oöcyte divides to form two secondary oöcytes. One of these receives little cytoplasm and is called the first polar body. 1997 G. S. Helfman et al. Diversity of Fishes ix. 120/1 Oogenesis, the development of eggs, occurs within the ovary and also progresses through various stages involving oogonia, primary and secondary oocytes, and finally ova or eggs. < as lemmas |
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