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胚细胞

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The middle germinal layer of an early embryo, consisting of undifferentiated cells destined to become the ''.

中胚层早期胚的中间胚芽层,由最终将发育成中胚层的未分化细胞组成

The development of anther and ovule followed the finish of the flower organ initiation. Pollen mother cells and well developed microsporagium wall occurred when the diameter of the bud reached about 3.0 mm, and the archesporial cell which played the role of megaspore mother cell formed in ovule when the diameter of the bud reached about 3.5 mm.

花药及胚珠的发育与花器官的形态发生之间有明显的连续性,当花蕾直径为3.0 mm左右时花粉母细胞及完整的花粉囊壁形成,直径达到3.5 mm左右时胚珠中出现孢原细胞的分化,它直接起大孢子母细胞的功能。

Using the Hprt gene as a positive control, our result suggested that both the testis tissue and the male embryos from which Sry transcription can be detected failed to yield any positive results of Xist. Female embryos at the pronucleus stage and 2-cell failed to produce any positive result of Sry and Xist too.

然后利用实验一确定的PCR条件,以Hprt为阳性对照,用巢式RT-PCR对小鼠早期胚胎进行Xist基因的转录分析,结果发现,转录Sry基因的睾丸组织以及雄性胚胎,从受精卵发育到囊胚的过程中,基本上不转录Xist基因;不转录Sry基因的雌性卵母细胞和雌性胚胎,从出现原核开始,到发育至2-细胞期的过程中,Xist基因一直不转录,但是,从4-细胞期开始,一直到孵化前囊胚阶段,雌性胚胎都转录Xist基因。

Thpetum is the gland cell type. The pistil has two carpels, the ovules belong to straight ovules with bitegmic;77% nucellus stoped development before from the archesporial cell and disappear and 23% nucellus atrophy .so the flower cannot grow seeds.

安祖花的雌蕊是由2 心皮组成,胚珠为直生胚珠,双珠被,77%珠心细胞在胞原细胞形成之前停止发育,并且逐渐解体消失,23%珠心细胞发生萎缩,导致雌蕊败育。

The Collaborative Program in Developmental Biology is primarily dedicated to research and education in Developmental Biology including amphibian gastrulation, molecular control of hematopoiesis, lymphocyte lineage commitment and cell development, hematopoietic stem cells, lymphocyte development, cell enlargement and cell differentiation, vertebrate embryogenesis, developmental neurobiology.

动物学系发育生物学合作研究组主要致力于两栖动力原肠胚形成,造血作用的分子控制,淋巴细胞血统定型和细胞发育,造血干细胞,淋巴细胞发育,细胞生长和细胞分化,脊椎动物胚形成,发育神经生物学等。

The Collaborative Program in Developmental Biology is primarily dedicated to research and education in Developmental Biology including amphibian gastrulation, molecular control of hematopoiesis, lymphocyte lineage commitment and cell development, hematopoietic stem cells, lymphocyte development, cell enlargement and cell differentiation, vertebrate embryogenesis, developmental neurobiology.

动物学系发育生物学合作研究组主要致力于两栖动力原肠胚形成,造血作用的分子控制,淋巴细胞血统定型和细胞发育,造血干细胞,淋巴细胞发育,细胞生长和细胞分化,脊椎动物胚形成,发育???经生物学等。

MethodsHuman embryonic lens epithelial cells were cultured by the explanting culture methods. An inverted phase contrast microscope, electron microscope and immunocytochemistry were used to study the growth specialties of the human embryonic lens epithelial cells.

方法组织块贴壁法培养人胚晶状体上皮细胞,通过倒置相差显微镜、透射电子显微镜,采用免疫细胞化学法分析人胚晶状体上皮细胞的生长特性。

During the first 3 days of sequence culture, SOF and granulosa cell enhanced the development of porcine parthenogenetic embryos and the cleavage rate (P.05) and the number of beyond 4-cell embryos. During the following 3 days. NCSU-23 supplemented with FCS and POEC supported the embryo to morulae/blastocysts.

在序贯培养的前3d,SOF培养基和颗粒细胞对胚胎的发育有促进作用,分裂率(P.05)和突破4细胞阻滞的数目显著增加,在培养的后3d,添加胎牛血清的NCSU-23和输卵管上皮细胞能支持较多胚胎发育到桑囊胚,桑囊胚的发育率为(59.5±3.2)%(P.05)。

A study has indicated the expression of Smad2 in human dental pulp cells, but there are no reports about the functions of Smad2/3 in TGF- P modulating dental pulp repair and tooth development.

本研究的目的是观察人牙髓细胞内Smad2和Smad3分子在TGF-β1信号转导中的作用,以及TGF-β1对二者表达水平的调控方式,并检测Smad2和Smad3在牙胚发育的不同时期和正常、龋坏、炎症牙髓组织中的表达及其变化,旨在从细胞内信号转导水平探讨TGF-β调节成牙本质细胞分化和牙本质形成的分子机理,为揭示牙胚发育和牙髓损伤修复过程中基因表达的调控机制提供一定的实验依据。

Secondly, to investigate the effect of FK506 on Human embryonic Schwann cell migration in vitro.

其次,研究FK506对人胚雪旺细胞体外培养迁移活性的影响,结果显示FK506能促进人胚雪旺细胞的迁移并抑制成纤维细胞的生长,这种作用在较低浓度时也能产生明显效果。

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呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。

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然而,要让一个真正的引用,你需要提供详细的个人和财务信息。