精子的

Most countries prohibit the performing of a treatment procedure or the use of sperm or embryos with the purpose of producing, or attempting to produce, a child of particular sex, unless to avoid the risk of genetic transmission of sex-linked diseases.

大多数国家禁止履行的程序或处理的精子或胚胎的生产，或企图生产，某一性别的孩子，除非以避免遗传性传播风险相关的疾病用途。

Sinensis were conducted.The result of SDS-PAGE showed that different parts in spermatophore, including spermatophore matrix, seminal plasma and the whole sperm, had different characteristic bands in PAGE maps, and the result could be repeated, so the method for spermatophore fractionation was reliable.

实验结果显示，通过分级分离所得的精液、精荚基质和纯品精子等各个部分，在SDS-PAGE电泳图谱上均显示出不同的特征性谱带，且试验的重复性较好，证明本实验建立的精荚分级分离的方法是可行的。

Either of two conjugating gametes that differ in structure or behavior,such as the small, motile male spermatozoon and the larger,non motile female ovum.

异形配子在结构或行为上不同的两个配合配子之一，如小的能动的雄性精子与大的不能动的雌性卵子

Pem gene is expressed in a time and stage specific manner. Pem transcripts are detectable as early as day 6 in mouse embryonic development, and are abundant in day 7 and 8, but decrease precipitously thereafter. Although Pem transcripts are not detectable in most of adult tissues, they are present in reproductive system. Furthermore, Pem has also shown to be specifically expressed in the proximal cauda and distal corpus regions of the epididymis, the regions where spermatozoa gain forward motility and fertilization competence.

Pem基因的表达具有明显的时间和空间特异性：在鼠胚发育的第6天，即可检测到Pem转录本的表达；第7-8天，Pem表达量达到最高，随后迅速减少；Pem基因在成年组织中一般不表达，但可在生殖组织表达；另外，Pem特异地在附睾近侧尾部和远侧的体部中表达，此处是精子获得运动性和受精能力的地方。

The results indicate that:(1) Using SUZI method can improve the fertilization rates of denuded oocytessignificantly. This result suggests zona pellucida may be one of the reasons that makedenude oocytes matured in vitro have a clearly deficiency on fertilization in vitro.

结果表明：(1)利用精子带下注射技术可以极显著的提高去除卵丘细胞的卵母细胞的受精率，表明透明带结构的改变是去除卵丘细胞的卵母细胞存在受精障碍的重要原因之一。

Indications:short of penis impotence and lack of sperm,weak health and adynamia,soreness of the waist and knees,dim eyesight and tinnitus,neurasthenia and listlessness frequent micturition and urgent micturition,premature ejaculation,sexual disorder,prostatitis and so on caused by deficiency of the kidney.

主治：阳痿的阴茎短和精子缺乏，薄弱的卫生和adynamia，的腰部和膝盖，眼花耳鸣，神经衰弱和无精打采尿频和紧迫尿频，早泄，性障碍，前列腺炎疼痛等等的缺陷造成的肾脏。

For allopatric species, asymmetric ethological isolation was apparent in crosses between O. chinensis formosana and O. yezoensis: females of O . chinensis formosana readily accepted males of O. yezoensis, but females of O. yezoensis show reluctance to males of O. chinensis formosana; howe ver, in either reciprocal cross sperms were transferred.

分布不重叠的中华稻蝗台湾亚种与小翅稻蝗之间，小翅稻蝗的雌虫与中华稻蝗台湾亚种雄虫的交配率显著低于种内交配，反向交配时则和种内交配率无显著差异；正反交配都能完成精子传送，显示出不对称、不完全的行为隔离，而无机械隔离的存在。

Methods Male mice were killed by cervical vertebrae dislocation, the caudae epididymides were removed and squeezed to HTF medium, then add oocyte-cumulus complexes, after IVF 22~24 h, wash the embryos and selected the two-cell embryos to 0.5 d pseudopregnant ICR mice.

对于需要净化的小鼠的雄鼠，采集附睾的精子，放入HTF溶液中获能，然后加入经过超排的卵团，体外受精。20~22 h后，挑选形态正常的二细胞胚胎，在净化实验室，移植给假孕的SPF级ICR母鼠，待产仔。

Outside the erotically charged nightclub Babylon, Brian aggressively flirts with a high school student, Justin, and takes him home. But their escapade is interrupted by the news that Brian's friend from college, Lindsay, a lesbian to whom he had donated sperm, is delivering their baby.

在充满情欲的夜总会巴比伦外，布赖恩主动地跟一个名为贾斯汀(剧中主演兰迪-哈里森饰)的高中生调情，并把他带回家，但是他们的性爱游戏被一条消息中断：布赖恩的大学朋友林赛，接受他的精子捐献的拉拉，正在生产。

Despite evidence implicating prostaglandins as critical factor in male reproductive functions, little is known about expression and function of COX-2 in the male reproductive system. By using immunohistochemistry, RT-PCR and Western-blot, the content of this research included:(1) The expression and localization of COX-2 in mature rat and human testis were examined.(2) We investigated the changes of spermatogenesis and testosterone levels in testis after by using the COX-2 specific inhibitor-rofecoxib at 2, 4 and 8 weeks.(3) To explore the relationship between the intratesticular level of testosterone and expression of COX-2 by completely destroying the Leydig cells of mature male rats with injection of a single I.

本课题应用免疫组织化学、RT-PCR和Western-blot等方法检测以下内容：(1)在mRNA和蛋白水平检测正常成年男性及大鼠睾丸组织中COX-2的表达及定位情况；(2)实验组大鼠持续给予COX-2酶的特异性抑制剂Rofecoxib，分别于用药后2周、4周和8周检测大鼠的精子生成以及睾丸组织内睾酮浓度的变化；(3)另一组实验大鼠给予特异性Leydig细胞灭活剂EDS，在特定时间内抑制睾丸组织内合成的睾酮，于用药后2周和4周，采用免疫组织化学及RT-PCR方法观察大鼠睾丸组织内睾酮浓度变化对COX-2合成的影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。