- 更多网络例句与受精前的相关的网络例句 [注：此内容来源于网络，仅供参考]
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The two neck cells of the archegonium divided to fo rm four neck cells before fertilization, this division happened prior to the div ision of the central cell, but at times they divided synchronously.
颈卵器的2个颈细胞在受精前进行一次斜向分裂形成4个颈细胞，此分裂一般早于中央细胞的分裂，偶尔也可见颈细胞和中央细胞同时分裂。
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Sperm capacitation is an essential mature process before mammalian fertilization. Making sperm capacitated in vitro is an important prerequisite to complete fertilization in vitro.
精子获能是哺乳动物受精前必须经历的一个成熟过程，所以精子的体外获能便是实现体外受精的一个重要前提。
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In the present review, we focus on some of the recent advances and some key developmental events revealed in the fertilization process, including the role of the egg apparatus in guiding pollen tube orientation, sperm cell movement to their targeting cells, interaction between gametes, egg cell activation, and onset of embryogenesis and endosperm development.
本文着重讨论受精作用的若干重要发育事件，包括受精前卵器细胞对花粉管向胚珠定向生长的近距离引导信号，精子的靶向运动，精、卵细胞相互作用和配子融合后卵细胞的激活与中央细胞发育的启动等。
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Remove of granulose cells before maturation will do no harm to earlyembryonic development derived from SUZI.
3在成熟培养前，卵丘细胞的去除对带下受精胚胎的发育没有影响。
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The relationship among calcium signal transduction, pollen-ovule interaction, and Programmed cell death was discussed from these studies, and the results are as follows:(1) Great difference was observed in the calcium distribution of pollens in the micropylar canal of self-pollinated and cross-pollinated ovules: a large quantity of calcium precipitates was located on the intine of self-pollinated pollen, while none on cross-pollinated pollen.
研究结果表明：(1)传粉后到受精前，自交和异交授粉胚珠珠孔道内花粉的钙信号表达存在很大差异，前者在花粉内壁上有大量表达，后者则没有。
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Partial or complete removal of cumulus before fertilization had no effect on fertilization rates of oocytes, but complete removal of cumulus impaired embryo development, leading to reduced morula/blastula rates.
受精前去掉山羊卵丘或者去掉部分卵丘对受精率没有显著影响，但是受精前完全去掉卵丘对于胚胎的后续发育有明显影响。
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Self-pollination was brought as the essential reason for causing emptied seeds by former researchers. Based on those studies, potassium antimonate and electron microscopy were used to study the calcium distribution of pollens in the micropylar canal of self-pollinated and cross-pollinated ovules and morphological changes in certain cells undergoing programmed cell death from pollination to fertilization, and observation of histo-chemical changes during microgametopyte development was performed by paraffin section.
前人研究认为自交是华北落叶松产生空粒的主要原因，本论文在此基础，运用焦锑酸钾沉淀法配合电镜观察研究了传粉后到受精前异交控制和自交辅助授粉胚珠珠孔道内花粉的钙分布情况，及此过程中细胞程序化死亡超微结构的变化，并通过石蜡切片研究了华北落叶松传粉后到受精前雌配子体发育过程及细胞内含物的变化，以研究在受精前胚珠内是否存在花粉识别与选择系统，探讨钙信号传导和花粉与胚珠相互作用及细胞程序化死亡的关系。
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Rising of fertilization membrane during induced maturation indicates insemination is not necessary to form the fertilization membrane. The oocyte will not become fertilizable until GVBD has happened and can still be fertilized after the second polar body extrusion.
卵母细胞只有在生发泡破裂之后才具有受精能力，从生发泡破裂到第二极体排出前的整个减数分裂过程中，卵母细胞都可以受精，但是只有在第一极体排出前受精的卵母细胞才能发生卵裂。
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According to the year with the best large-seed production, the reasons for empty seeds could be estimated as follows: Seed potential per cone calculated as 2 times the number of fertile ovuliferous scales was about 206 seeds. Percentages of seed losses resulting from pre-and post-pollination ovule abortion, prezygotic factors, embryo degeneration, and efficient seed were 33%, 27%, 39%, and%, respectively.
依据大粒种子产率最高的1年来估测空粒种子产生的因素，可以推估如下：依据每个可孕性鳞片所含2粒种子的鳞片数，潜力种子数约有206粒，再依此值算出受粉前后胚珠败育率、受精前败育率、胚败育率、及有效种子率分别为33%、27%、39%及%。
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The receptors were obviously densest at the filiform apparatus of the synergids.
麦芽凝集素受体在受精前的中央细胞和卵细胞膜表面均匀分布，而在受精后的合子和初生胚乳细胞膜表面缺失。
- 更多网络解释与受精前的相关的网络解释 [注：此内容来源于网络，仅供参考]
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dispermy：双精受精
例如应用高浓度的精液或授精前用氯仿等麻醉剂、尼古丁等生物碱进行处理则可引起多精现象和卵裂异常. 这些实验性多精受精现象,常常作为研究单精受精机制的手段而被应用. 相应地精子只是两个的时候,则称为双精受精(dispermy),在最初卵裂中可出现三个极.
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ovarian follicle：卵泡
在卵巢内部,滤泡刺激激素的功效,会促使卵巢内名为卵泡(Ovarian Follicle)的细胞制造出动情激素. 在初潮阶段,此一过程会将信息传递至位于脑下垂体的黄体生成素释放激素而后开始排卵. 在受精前,成熟的卵泡会转变成黄体,接下来,黄体便会分泌黄体酮,
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female pronucleus：雌原核
它由从中心粒发射的微丝引导,向雌原核(female pronucleus)方向迁移. 在哺乳动物中,雌原核在与雄原核融合前首先必须完成第二次减数分裂. 第二极体的排出是减数分裂完成的标志. 随着雌、雄原核相遇和融合,受精结束. 紧接着第一次卵裂开始.
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progamic division：受精前分裂
原配子囊 progametangium | 受精前分裂 progamic division | 受精前的决定 progamic sex determination
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progamic sex determination：受精前的决定
受精前分裂 progamic division | 受精前的决定 progamic sex determination | 祖先 progenitor
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ventral canal cell：腹沟细胞
腹部的外壁由1至多层细胞构成,内有1卵细胞(egg cell),卵细胞与颈沟细胞最下一个细胞之间有1个腹沟细胞(ventral canal cell),受精前颈沟细胞和腹沟细胞均解体,精子器成熟后,精子逸出,在有水的条件下,游入发育成熟的颈卵器内.