核型

Objective: To investigate the correlation of spermatogenesis impediment with chromosomal abnormality and with the deletion of DAZ gene.

目的：探讨染色体核型异常和DAZ基因缺失与生精障碍的关系。

White blood cells show no spindling or abnormal nuclei.

白细胞未见细长，也没有异常核型

Auraria from $ areas in China and some from Japan, it was.found that in all of the species, the homologous chromosomes were in various degree of synapsis,while the nonhomologes were distributed at random in the nucleus.

对采自北京、上海等7个地区及来自日本的金色果蝇I Drosophila auraria）和金色果蝇III的三龄幼虫的脑神经节进行核型分析。

The karyotype contains 12 pairs of metacentric, 3 pairs of submetacentirc and 4 pairs of subtelocentric chromosomes. There is no telocentric chromosome at all.

绢丝丽蚌的二倍体数目2n=38，核型公式为2n=24m+6sm+8st，NF=68，其中中部染色体12对，亚中部染色体3对，亚端部染色体4对，没有端部染色体。

Its chromosome number was estimated at 2n = 48; which consisted of 8 submetacentric and 40 telocentric chromosomes. The karyotype formula was described as 8 sm + 40 t with 56 fundamental arms.

计算其染色体数，结果为2n＝48，其中8条为近中央中结染色体及40条为端点中结染色体，核型公式为8 sm+40 t，染色体总臂数为56。

The results showed as follows: The diploid chromosome number of Yanbian yellow cattle and Liyan hybrid cattle were 2n=60,the karyotype of bulls was 2n=60,XY,while cows were 2n=60,XX. 29 pairs of autosomes were telocentric.

采用外周血淋巴细胞培养技术、常规染色体制片技术和染色体C-分带技术，对延边黄牛(10♀，10♂)和利延杂交牛(14♀，15♂)两品种的染色体核型和C-带进行了研究。

Three kinds of embryos' chromosome, including goat fertilization embryo, goat-goat cloned embryo and goat-rabbit cloned embryo were analyzed, The results showed that all of them have 60 chromosomes with same character, all were telocentric chromosome, besides the X-chromosome is the second larger telocentric chromosome.

经对超排获得的山羊受精胚、山羊同种克隆胚和羊-兔异种克隆胚的囊胚期胚胎染色体分析表明，三种来源的胚胎其染色体数目均为60条，且所有常染色体均为端部着丝点染色体，X染色体为第二大的端部着丝点染色体，说明山羊同种克隆胚和山羊-兔异种克隆胚均为山羊的核型，是供体细胞核在不同胞质中的重新编程的结果。4。

In this paper, the male reproductive system of this species was investigated by light microscopy, and electron microscopy, and the tetraploidy embyros of the prawn were induced by heat shock treatment.

本文应用组织学、电子显微镜、细胞遗传学及多倍体诱导技术对日本沼虾雄性生殖系统、染色体及核型、多倍体产生的条件等进行了比较深入的系统研究，对于解决人工授精难题和培育出品质优良的养殖品系具有重要意义。

Staining positive and totipotent, but two clonies were different in some biological characters, such as the ability of differentiation both in vivo and in vitro, normal karyotype and so on.

KMMES1和KMMES2细胞株具有典型的胚胎干细胞形态，AKP染色强阳性和全能性；然而两个细胞株生长速度、体外分化能力和正常核型比例等生物学性状存在一定的差异。

The result shows: the tree peony chromosome is very steady. It is difficult as the basis of distinguishing species.

结果表明：牡丹种及品种的核型相当稳定，很难作为鉴别种类的依据。

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。