Most grass embryos have a flap-like structure known as the epiblast.
大多数禾本科胚有一片瓣 状 结构通常称为外胚叶.
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Fruits and embryos were obtained by self-pollination of Avignon and Lilium brownii.
俄维农自交和野百合自交可以获得自交果实和自交胚.
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A sharp demarcation of adventive embryos from zygotic embryos cannot be drawn.
不定胚与合子胚之间不能划分出明显的界限.
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这一现象最具说服力的事例为胡萝卜组织培养中得到的异位胚胎.
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许多林木树种都有颈卵器, 受精以后便产生许多原胚.
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Embryos after culture ever day , the blastocyst formation rate and hatching rate were accounted.
结果输卵管积水组的胚胎成囊率和囊胚孵出率低于无积水组,并呈剂量依赖性.
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Thus, even during implantation the blastocyst may still divide and grow into two separate embryos.
因而, 甚至在植入期间,胚泡仍然可能分裂并发育成两个分离的胚胎.
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There are two methods of collecting cow embryos -- directly through the birth canal, or surgically.
收集母牛胚胎的方法有两种, 一种是直接通过产道, 另一种是施用外科手术.
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On this middle view, human embryos should be recognized as having modest moral worth.
根据这种中间派看法, 应当承认人的胚胎具有适当的道德价值.
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What somatic-cell nuclear transfer technology produces are cloned human embryos.
肉体细胞核心移植技术生产的是克隆人的胚胎.
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The sex of embryos were determined with PCR ( Polymerase chain reaction ) technique.
胚胎的性别鉴定采用多聚酶链式反应 ( PCR ) 技术.
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The term caudal means nearer to the tail and is used in description of embryos.
尾侧意指靠近尾部,常用在胚胎的描述中.
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It is a type of cloning that involves the duplication of embryos for stem cell research.
这是一种复制胚胎用于干细胞研究的克隆.
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Concluson: The hypoplasia of embryos is not the primary reason for long dormancy of the seeds.
结论: 北五味子种子胚形态发育不完全,不是种子长时期休眠的主要原因.
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The two embryos that dizygotic, not genetically identical. Therefore, the twins are not identical.
两个胚胎来自双卵, 遗传学上不一样, 所以这种双胎是不一样的.
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早期分裂时期的胚可以利用胚柄, 宿存和退化中的助细胞所提供的代谢物.
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However, the lev-els of MP _ 4 in the estrous period were high, and the quality of embryos was bad.
而在发情日, MP_4含量高, 则胚胎质量差.
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