大核

HRP retrograde tracing ; abducens nucleus ; vestibular nucleus ;γ-amino-butyric acid; immunohistochemical staining ; rats

HRP逆行标记；展神经核；前庭神经核；γ-氨基丁酸；免疫组织化学；大鼠

The results indicated that a high volumetric ratio of acicular ferrite in the simulated weld metal can be obtained in case the ratio of manganese and silicon is in a certain range.

结果表明，当Si、Mn比在一定的范围时，焊缝中将出现高比例的针状铁素体；且在大尺寸奥氏体晶粒中的非金属夹杂物上形核，高密度微小的夹杂物(1μm以下)的弥散分布对其形核更为有利。

Both primary and secondary amines were readily aminolysized, but secondary amine gave relatively low yield. It appeared that the aminolysis had good selectivity since the intermediate Ⅲwas more readily attacked by N-nucleophiles than by 0- nucleophiles.

实验发现，芳香胺和非芳香胺均可获得良好的反应结果，但芳香胺所需的反应时间较长；伯胺和仲胺都是良好的胺解试剂，但使用仲胺时产率较低；N原子亲核试剂比O原子亲核试剂具有更大的反应性。

The neuronal connections of the nucleus accumbens in the rat was studied with aid of retrograde and anterograde tracers.

用HRP和荧光素—伊凡氏兰、核黄对大白鼠伏核的传入性联系，用WGAHRP对其传出性联系进行了实验研究。

The ultrastructure characters of pollen grain in Brassica napus are:1There are vacuoles in cytoplasm but no starch grain in uniceelluar pollengrain.2The veget- ative nucleus of bicellular pollen grain is generally spheroidal;while the generative cell is spinde-shaped,with a big nucleus,thin layer of cytoplasmand few cell orgens,no cell wall.3In three-celled pollen grain the sperm cell is separated from the cytoplasm of vegetative cell by two layers of plasmic membrances.

Brassica napus的花粉粒，在不同发育时期超微结构的特征如下：1单胞花粉粒有一个球形的细胞核和明显的核仁，细胞质内出现液泡，缺少典型的淀粉粒。2双胞花粉粒的营养核多为球形。生殖细胞纺锤形，无细胞壁，细胞核比例大，细胞质呈薄层，细胞器少。3三胞花粉粒有一个裂片状的营养核和两个纺锤形的精细胞，精细胞无壁，以两层质膜与营养细胞的细胞质相隔。

Tapetum cells degenerated and only ER small vesieles were the visible organelle at the 2—celled pollen stage.

绒毡层在小孢子液泡化中期开始退化，开始退化的绒毡层表现为内质网腔膨大，核周腔增大，核孔数增加。

The coccygeal intervertebral discs of rats were opened to obtain 5 coccygeal nucleus pulposus, mixed with 50 μL physiological saline to prepare suspension.

切开大鼠尾椎椎间盘，髓核呈胶冻样，取5个髓核并加入50 μL生理盐水，充分搅拌稀释成混悬液备用。

The difference of chemical shifts of heterocyclic hydrogen and carbon resonance signals was produced by the inductive, conjugative, magnetic anisotropy, and stereo effects of substituents for different tropane compounds.

取代基的诱导效应、共轭效应、磁各向异性效应和立体效应对莨菪烷化合物杂环上氢核和碳核的化学位移有较大的影响。

The neoplastic epithelia are low cuboidal and not columnar in shape, with very large and atypical oval nuclei with vesicular chromatin and prominent nucleoli.

肿瘤性上皮呈低立方状而不是柱状，有很大的卵圆形核和显著核异型性，空泡状染色质和显著核仁。

The micronucleus test has shown that cystamine has evident radioprotective effect at chromosome damage of blood lymphocyties and nucleated bone-marrow cells in irradiation rats. The Dose-Reduction Factor is 1.89 and 1.81 respectively.

微核测定法证明，胱胺对受照射大鼠的血液淋巴细胞和骨髓有核细胞染色体的辐射损伤有明显的保护作用，其剂量减低系数分别为1.89和1.81。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。