不育

The disintegration of tapetal cell was relayed, the inner wall of tapetal cell secreted fewer Ubish bodies.

花粉败育过程中，小孢子液泡膜和细胞质膜断裂破碎，细胞质解体，线粒体、质体、内质网等细胞器解体或退化，绒毡层持续不解体，并缺少乌氏体的分泌。

In the segments of ileum incubated with U50488H(10 nmol*L-1) for 1 h, the sensitivity for U50488H was reduced, the concentration-response curve was shift to right, but the sensitivities for OMF, NM and DADLE were unchange.

在U50488H(10 nmol*L－1)中温育1 h的回肠，对U50488H的敏感性下降，浓度反应曲线右移，但对OMF，NM，DADLE的敏感性不变。

Thus it is obvious that the weak homology existedamong genomes A, B, D and 〓. However, the rare unreduced gemetes and near-unreduced ones with the loss of several chromosomes could be produced by the highlyunequtional division of univalents at the first meisis and the normal second division,which gave the F1 hybrid the partial fertility.

但通过第一次减数分裂时单价体的极不对称的分离及正常的第二次分裂，可形成少量未减数配子和丢失了少数几条染色体的近未减数配子，使杂种〓表现部分可育性。

Results Sodium azide (25-100 mmol/L, after 4 h of incubation) depolarized the membrane potential and increased the Aβ production, but it showed no effect on the expression of APP.

结果叠氮钠在浓度25～100 mmol/L时，与细胞共孵育4 h，可使细胞膜电位去极化程度明显增高，并引起胞内Aβ表达显著增高，但对胞内APP表达水平影响不明显。

And try to find out the effect of TSA on the proliferation and differentiation of rat tracheal stem cell. Methods 1.Preparation of 5-Fu Model and TSA treatment Two weeks" Wistar rats provided by the animal center of the China Medical University. The animals were sacrificed by 10% Chloral Hydrate 0.4ml/100g. Then the tracheas were excised aseptically. Then they were douched with PBS and cultured in 1:1 mix of Dulbecco"s modified Eagle"s medium and Ham"s F-12 medium (DMEM/F12) containing 120 mg/ml 5-Fu and 10% fetal bovine serum for 12h at 37°C. The tissues were then refreshed by culturing in DMEM/F12 containing 10% FBS and 200nM TSA.

1、制备气管损伤模型及剥离上皮取约200克左右的Wistar大鼠，雌雄不限(中国医科大学实验动物中心提供)，腹腔注射10%水合氯醛0.4ml/100g，无菌条件下取出气管，无菌PBS反复冲洗，洗净血液和粘液，置于DMEM/F12培养液中(含10%胎牛血清)，于培养液中加入终浓度为100mg/ml的5-Fu，37℃，5%CO2孵育12小时，弃去上述培养液，换成新鲜DMEM/F12液(含10%胎牛血清)，同时加入终浓度为200nM的TSA继续培养，于换液后3、6、12、24、48小时分别10%中性福尔马林固定，石蜡包埋，制成4μm厚的组织切片。

Nurtures the infant child the teacher is not dictates explains, but is carefully prepares and arranges as eeriest of specific environment for the child, guides the child academic society to be the person, the academic society works, the academic society studies, the academic society associates.

育婴童的教师不是口授言传，而是精心为孩子准备与安排一系列特定的环境，从中引导孩子学会做人、学会做事、学会学习、学会交往。

Dogs who have been kenneled too much often have a flatness to them, theylack the animation and expression we like to see.

犬舍笼育的狗通常性格缺乏，不能表达我们所希望看到的活泼和有生气的表情。

The proliferation of the anthers and pollens were distinctly dysplastic. During the prophase of abortive pollens, the tapetums and middle layers of quadrants separated; during metaphase, the microspores were development arrest; during anaphase, the tapetums and microspores gradually disappeared after combination, the anthers finally turned into drying and shriveling to be unable to form pollens.

如主茎开花初期提前1~2d，花萼和雄蕊个数为4~6个，花药室数为2~4个，开花后花药呈白色或淡绿色，表面无皱纹，并延迟脱落；其花药和花粉发育明显异常，败育初期在四分体期绒毡层与中层分离，中期小孢子形成时期发育停滞，后期绒毡层与小孢子粘连后逐渐消失，终期花药干瘪，不能形成花粉。

The declination in the kernel yield of corn underwater stress at stage of tasselling was mainly resulted in the reductionof kernel numbers per ear which increase of bald tip and reduction ofgrain numbers per row caused . It showed that drought causedunencountering of flowering phase and increase of abortive kernels.

研究表明，穗粒数的减少是玉米抽雄开花期水分胁迫下产量降低的主要限制因子，而秃尖增长和行粒数减少是穗粒数降低的主要因素，说明干旱导致雌穗发育受阻，花期不遇，籽粒败育率增加。

There is a noteworthy passage in one of King Asoka's inscriptions,"One thinks well of one's work. One never thinks ill of one's work."

阿育王的墓碑铭中有值得注意的一段，&一个人认为自己所做为好的，不会认为自己所做为恶。&

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。