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High-density material lying at the circumference of a proacrosomal vesicle was arched with a gap in Solen grandis, but round in Solen strictus. From this gap a proacrosomal vesicle of Solen grandis began to invaginate and deform while it moved to the nuclear front. However a proacrosomal vesicle of Solen strictus did not deform until it reached the nuclear front.

大竹蛏精细胞前顶体囊的高电子密度物质分布在周缘呈一个带缺口的弧形而不是圆形,而长竹蛏前顶体囊周缘的高电子密度物质呈一圆形分布;大竹蛏的前顶体囊是先内凹变形,然后一边变形一边移动,而长竹蛏的前顶体囊是在到达核前端后才开始变形。

Endogenous cadavarine content in female flower from megaspore mother cell stage to female flower maturation was higher than those in m...

亚精胺和腐胺含量随着大小孢子四分体形成和大孢子核的连续分裂而分别表现下降和上升。

The immunohistochemistry showed that ERK and JNK had the similar location which the cytoplasm and nucleoplasm were immunostained in the ovogonium and spermatogenous cells.

在免疫组织化学的观察中,ERK和JNK在卵原细胞和精原细胞中均为阳性反应,且定位相似:细胞质及细胞核核质呈阳性反应,核仁阴性。

The spiny eel , belonging to Perciformes, Osteichthyes, is a kind of little freshwater fish distributed in Southern China. In 1998, Our lab detected XX/XY differentiated sex chromosomes in this specie with karyotypic analysis, and then with chromosomal binding and SC observation, we identified that its two largest metacentric chromosomes were X, Y sex chromosomes in 1999. X, Y chromosomes differ each other not only in the distribution of heterochromatin but also in their shapes, which make them could be recognized directly under the light-microscope without any banding treatment.

刺鳅,属鲈形目、刺鳅科(Perciformes,Mastacembelidae),是广泛分布于中国南方的小型淡水鱼类。1998年,我室通过核型分析,首次发现该物种具有明显分化的异形性染色体,其性别决定类型为XX/XY型。1999年,本室通过染色体显带、精母细胞联会复合体观察,再次确认刺鳅染色体组中最大的一对中部着丝粒染色体为X、Y性染色体,两者不仅已经出现结构异染色质分布上的不同,同时在外部形态上也存在明显差异,识别特征鲜明,在光镜观察下无需显带即能清晰辨认性染色体。

In the present research, the cloning of human FA-1 gene and study on 5' and 3' MAR of protamine genes had performed.

有鉴于此,本文对人FA-1基因及精蛋白基因5'端、3'端核基质结合区作了如下研究。

Eukaryotic nuclear proteins and viral proteins contain NLS, and the protamine is widely used as a natural NLS peptide.

NLS存在于真核细胞核蛋白及病毒蛋白中,鱼精蛋白是应用较为广泛的天然NLS类短肽。

Fig.5 Late stage in differentiation of spermatid,the nucleus migrate towards the zone of differentiation.

图5。精细胞疼痛分化的晚期长形的细胞疼痛核移向分化区,领状结构。13000

Except the incomplete maturation of spermatid nuclear and oocyte activation, idendification of a live spermatid is a pivotal procedure. It is difficult to distinguish round spermatids from other round cells such as spermatocytes, monocytes, polymorphonuclear leukocytes and so on.

除精子细胞的核蛋白不完全成熟及卵子激活不足等因素外,如何正确选择存活精子细胞是个难题,如圆形精子细胞与精母细胞、单核细胞和多形核白细胞等其他圆形细胞的区分就比较困难。

Simultaneous studies were conducted on bone marrow micronucleus and spermatocyte chromosome aberration in mice, yielding negative results and no evidence of mutagenic effects.

同时报道了小鼠骨髓微核和睾丸精母细胞染色体畸变试验研究的结果,即两项试验均为阴性,无致突变效应。

Previous studies have demonstrated that primary spermatocyte can undergo meiotic divisions in MI oocytes and the resulting embryos can develop to term. However, the success rate is very poor.

已经证明初级精母细胞在显微融入MI卵母细胞后可以完成减数分裂并且产生的胚胎可以发育到期,只是发育率还非常低,作为一种形式的核移植,细胞周期的同步化处理对于胚胎的发育具有重要意义。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。