母核

2The studies on the appearance typomorphism, physical typomorphism, inner structure typomorphism and chemical typomorphism of the zircon and garnet, and the result of U-Pb isotopic age dating of zircon indicate that the zircons are meta-morphogenic genesis but two or three of them are magmatic genesis and most meta-morphogenic zircons have a basic magmatic zircon core which was generated in Stage of Yanshand and Indo-Chinese epoch. The genesis and origin of the garnet is very complicated. The garnets are main almandine with high Fe and Mg content and were proposed their souce rocks are mostly regional mid-degree-metamorphic rocks.

2研究锆石和石榴石的形貌标型、物性标型、内部结构标型以及成分标型特征和锆石U-Pb同位素测年结果表明，锆石除少数几个为岩浆锆石外，绝大多数是变质锆石，且中间多有形成于燕山-印支期的基性岩岩浆锆石残核；石榴石的成因及来源是比较复杂的，以铁铝榴石为主，且铁铝榴石中Fe、Mg的含量较高，推测其源区母岩主要以中级区域变质岩为主。

The zona and nucleus of the bovine oocyte were removed by pronase and bisection method respectively.

本文探讨了小鼠-牛异质胚构建的简便方法及小鼠体细胞核在牛卵母细胞中重新编程的可能性。

1, cumulus cell had important role on nuclear and cytoplasmic maturation of oocytes.

1，卵丘细胞对卵母细胞的核和胞浆成熟均有重要作用。2。

Although the ability to reprogramming of Kun Ming white mouse oocytes cytoplast is not effectively, reprogramming ability has improved when cystoplasts from oocytes and embryos work together.

昆明白小鼠卵母细胞胞质对体细胞核的重新编程能力较弱，而当其与正常受精卵的胞质共同作用时可较好地改善对体细胞的重新编程能力。

In Peiai 64S, the microtubules showed abnormal patterns of distribution from pre_meiotic interphase to metaphase Ⅰ. For example the broad band of perinuclear microtubules seen at diakinesis in IR36 was much disorganized and loosened in Peiai 64S.

(1)在偶线期具极性分布的微管分布不存在；(2 )在小孢子母细胞减数分裂期间的细胞内出现许多特别粗的微管束；(3)在终变期围绕核的微管宽带结构松散及内含微管密度低。

Subsequently, the tapetum cell began to disorganize, and it kept the strongest Ca^2＋ fluorescence intensity from microspore to pollen maturity until the tapetum was disappeared completely.

在花药壁组织内Ca^2＋分布也呈现规律性的变化：造孢组织时期，花药壁组织Ca^2＋荧光强度在不同壁层组织中分布均匀；小孢子母细胞时期，药壁中层细胞Ca^2＋荧光最强，绒毡层细胞次之；单核小孢子时期，绒毡层细胞呈解体状态，Ca^2＋荧光最强，并保持到二核花粉时期直至绒毡层完全消失，但此时花药纤维层发育形成，表现出较强的Ca^2＋荧光。

Est-1 only express in the stage of 8-nucleat embryo sac and metaphase I of meiosis.

Est-1在八核胚囊时期和大孢子母细胞减数分裂I中期表达。

The sterile line of Zhenshan 97A, Baoyuan A, g37A and Peiai64S had more Ca〓 precipitatesthan those in the fertile anthers since the pollen mother cell stage (which were mainly deposited in the epidermis, endothecium and vascular bundle).

野败不育系珍汕97A、包台型不育系包源A及温敏核不育水稻培矮64S和无花粉型不育系g37A的花药均从花粉母细胞时期开始出现较多的Ca〓沉淀，主要分布在药壁外层、药室内壁和药隔中。

The study aimed to provide references for the time of oocyte maturation in vitro and enucleation in the course of sheep nuclear transfer.

［目的］为绵羊克隆试验中卵母细胞的体外成熟及去核时间提供参考。

That shows there are some difference in the steroid regulation between the anuras and the urodeles. Among three of the steroid, one can convert to the other, and some enzyme activity is concerned with the conversion.7. For the Rana quadranus and the Batrachuperus tibetanus, the steroid receptors play key roles in the synthesis and secretion of the steroids and during the development of the follicle cell.

类固醇激素受体在卵母细胞中可能通过两种途径发挥作用，一种是存在于胞质中，作为信号转导因子的非基因组调控机制；另一种是存在于核中，作为核转录活性因于，改变基因转录活动的基因组调控机制。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。