生殖

E.stigmosa completed merogony and began gamogony at about 108th h post-infection, and all endogenous stages developed intranuclearly in epithelial cells.

在感染后第108h左右，多斑艾美球虫完成裂殖生殖并进入配子生殖阶段。

But methoxychlor also has female reproductive toxicity,mainly affecting ovary,uterus,nidation of ovum of pregnant rats,which is an important aspect of ...

甲氧滴滴涕对雌性生殖系统的卵巢、子宫以及受精卵植入同样具有毒性作用，其是内分泌干扰毒性的重要方面，对阐明环境毒物导致的雌性生殖毒性及防治有重要意义。

methoxychlor; reproductive toxicity; developmental toxicity; reproductive hormone

但近年来的研究发现，MXC仍然具有诸多方面的毒性作用［1-2］，尤其以生殖毒性引人注目，并发现MXC及其代谢产物在体内外具有雌激素样作用和抗雄激素活性作用［3-4］，文建国等［5-6］也报道MXC对雄性生殖系统有一定的损害。

Monogony is a special kind of sexual reproduction.

紫菜的生殖主要有无性生殖和有性生殖，单性生殖是一种特殊的有性生殖。

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。

The relevant hormone determining results show: Prolactin, estradiol (E2) and progesterone content in serum have regularly changed during reproductive and nonreproductive phase.

相关激素测定的结果表明：血清中垂体泌乳素、雌二醇(E2)和孕酮含量在生殖期和非生殖期呈现规律性变化。

According to the size and shape of oocyte, the morphology of nucleolus, the growth of yolk and the structure of follicle, oogenesis of H. d. supertexta can be divided into three stages as follows: oogonium, previtellogenic oocyte and vitellogenic oocyte. The ovary wall is composed of tunica adventitia and germinal epithelium which will produce oogonia and follicle cells. The follicle is the structure unit of ovary.

根据卵细胞的大小、形状，核仁的形态，卵黄颗粒的积累情况，滤泡的结构等，将九孔鲍卵子的发生分为卵原细胞、卵黄发生前的卵母细胞和卵黄发生期的卵母细胞3个时期；卵巢壁由外膜及内生殖上皮构成，生殖上皮分化产生卵原细胞和滤泡细胞；卵巢的结构单位是滤泡。

Parthenogenesis in which the egg is activated by sperm ,but without fusion of the egg and sperm nuclei.

雌核生殖一种单性生殖，精子激活卵子，但是卵子和精子核没有融合

Parthenogenesis occurs naturally in some species, including invertebrates and lower plants. It happens more rarely in some vertebrates.

某些生物天生具有单性生殖的能力，包括无脊椎动物和低等植物，但单性生殖在脊椎动物中较为罕见。

Due to the causes such as polyploidy and self-incompatibility, the plants of Paspalum, with the greatest number of apomictic species, show much complex and various reproduction characteristics.

由于多倍体的存在及有性生殖的自交不亲和等原因，雀稗属植物表现出复杂多样的生殖特性，是禾本科中具备无融合生殖特性种类最多的属。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。