受精卵

In this study,we introduced the use of sodium chloride step gradients in fractionating foreign DNA fragment for microinjection.

与传统的琼脂糖凝胶回收的方法相比较，用此方法制备的外源DNA片段对小鼠受精卵进行显微注射后，受卵体母鼠的胚胎存活率，以及子代小鼠的外源基因整合率均有明显的提高。

Lower concentration of the microinjected DNA, choosing CZB and zygotes with good quality can enhance efficiency of microinjection.

选用较低的基因浓度，良好的操作介质CZB，使用质量好的受精卵，会提高显微注射的效率。

The zygote, by cell division, grows into a morula an then into a blastocyst.

通过细胞分裂，受精卵发育成桑葚胚，然后发育成囊胚。

It transforms the zygote into a cluster of cells called morula which, seen through a microscope, resembles a mulberry.

卵裂把受精卵转换成称为桑葚胚的细胞团，它在显微镜下看起来象桑葚果。

At the same time, a fertilized ovum to the uterine cavity gradually moving ,3-4 days after the arrival of intrauterine growth when cells become more than an entity, shaped like mulberry, so called morula.

与此同时，受精卵逐渐向宫腔方向移动，3—4天后到达宫腔时已发育成为一个具有多个细胞的实体，形状象桑椹，所以称为桑椹胚。

PHMG content within the range of 125 mg/L did not influence the oospore hatchability of Penaeus japonicus and the content within 0.5 mg/L had no significant influence on metamorphosis rate of nauplius larva.

聚六亚甲基胍含量在125 mg/L范围内对日本对虾受精卵孵化率无影响，含量0.5 mg/L以内对无节幼体变态率无明显影响。

Result The heterobacteria, vibrios and pathogenic Vibrio parahaemolyticus were the roost in fertilized eggs of shrimp rot the least in nauplius, then their number would increase with growth. During whole rearing period, both heterobacteria in larvae, vibrios in water would increase by one order of magnitude, while both vibrios in larvae and heterobacteria in water would increase by two orders of magnitude.

结果］异养菌、弧菌和致病性副溶血菌数量都是对虾受精卵中高，无节幼体中最低，而后逐渐升高在整个育苗期，对虾幼体中异养菌和养殖水体中弧菌增加1个数量级，对虾幼体中弧菌和养殖水体中异养菌均增加2个数量级。

Nidation of ovum lies out of cavum corporis uteri call ectopic pregnancy, costomed call extrauterine pregnancy. The 95% of them are tubal pregnancy.

受精卵在子宫体腔以外着床称为异位妊娠，习称宫外孕，其中以输卵管妊娠多见，占95%左右。

To observ the toxicity of infected mice and establish mice reproductive toxicity model;②To observe the infected BALB/c female mice ovulation quantums and ovum chromosome;③To observe the oestrogenic hormone( FSH, LH, E2 )level of infected BALB/c female mice;④To observe zygote developmental condition before nidation;⑤To observe embryonic development condition of infected mid-gravidity mice to research the reproductive toxicity and development toxicity of toxoplasma gondii to the BALB/c female mice.

目的： 本实验采用弓形虫感染BALB/c雌鼠，①观察染虫雌鼠的毒性反应，建立生殖毒性的小鼠模型；②染虫雌鼠排卵情况及卵母细胞染色体的变化；③染虫雌鼠性激素(FSH、LH、E2)水平的变化；④着床前受精卵的发育情况；⑤孕中期鼠染虫后胚胎的发育情况，探讨弓形虫对雌鼠生殖功能及胚胎发育的毒性作用。

Tetraploid organisms may arise by the fusion of two diploid gametes that have resulted from the nondisjunction of chromosomes at meiosis, or by nondisjunction of the chromoosomes during the mitotic division of a zygote.

四倍体的产生可能是由于两个二倍体配子发生融合，这种二倍体配子又是在减数分裂中染色体不发生分离而形成。四倍体也可能因为受精卵进行有丝分裂时染色单体未发生分离而形成。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。