A few of the cells underwent the crucial step of meiosis cell division followed by growth into mobile sperm with a head ( to fertilise the egg) and tail ( for mobility). 少数细胞通过了细胞减数分裂的关键一步,发育成为有活力的精子,有用以使卵子受精的精子头部和使精子移动的尾部。
It shows sperm cut profiles, sperm genetic material stored in "head". 精子的纵断剖面,精子的遗传物质存储在“头部”。
Boar sperm lectin ( BSL) located on the sperm head has been found to bind to both the sperm proteins and the zona pellucida glycoprotein ZP3. 猪精子凝集素(BSL)位于精子头部,既与精子蛋白结合,亦与透明带糖蛋白ZP3结合。
With transmission electron microscopy, separation of the sperm head from the tail at the proximal centriole was observed in more than 90% of the spermatozoa, the detached loose heads and the well organized flagella being covered by a continuous plasma membrane. 透射电镜观察结果表明,90%以上的精子在其颈部水平头部与尾部分离,相互分离的头与尾分别被完整的细胞膜包绕。
The cytoplasm of immature oocyte at germinal vesicle stage did not induce the replacement of sperm protamine with histone and sperm head decondensation. The amino acid sequence of such proteins is not as conserved as that of histones. 生发泡期卵母细胞质不能诱发精子组蛋白替代鱼精蛋白及精核解聚。参与DNA集缩的蛋白包括鱼精蛋白,组蛋白类似物和其他精子特异性蛋白。
Conclusion For each reciprocal translocation carrier seems to have a particular meiotic segregation results, FISH analysis on sperm head should be done for each carrier in order to provide an accurate genetic counseling. 结论不同的男性染色体相互易位携带者减数分裂的分离结果可能不同,对其行精子FISH分析有助于提供更准确的遗传咨询和行胚胎植入前遗传学诊断的预后估计。
Spermiogenesis of sperm head in soft-shelled turtle, Trionyx sinensis 中华鳖精子头部的发生
The sperm consists of head, middle piece and tail, about 32-40 μ m in length. 精子由头部、中段和尾部组成,全长约为32-40μm。
Those with two hybridization signals in one sperm head should be abnormal in chromosome numbers. 精子头部有2个荧光杂交信号的精子为染色体数目异常精子。
The sperm recognizing to eggs is completed in mammalian species by sperm head glycoproteins specific binding to a complementary glycoproteins located on the egg ZP. 哺乳动物的精卵识别是通过精子表面糖蛋白和透明带(ZP)糖蛋白的特异性识别完成的,这两种糖蛋白结构互补。
By using two color FISH with one euchromosome probe and one sex chromosome probe, the sperm with same color of two hybridization signals in one sperm head could be identified as aneuploidy sperm or diploid sperm. 若用1条常染色体探针和1条性染色体探针进行FISH,可以区别头部有2个相同颜色荧光杂交信号的精子属非整倍体精子或二倍体精子。
To a certain degree, sperm head membrane maybe is the key factor to the androgenesis of the gynogenetic silver crucian carp eggs. 在某种程度上表明:精子膜蛋白可能是雌核发育银鲫卵子进行雄核发育的关键因素。
Our results suggested that: on the surface of sperm head, there is an epitope as P3 peptide, and anti-P3 antibody could conjugate with sperm specially and excellently; 结论:P3肽在精子头部表面有表达,特异性抗P3抗体可与其高度结合;
Electron microscopic study of sperm head formation in Dinodon rufozonatum 赤链蛇(Dinnodonrufozonatum)精子头部形成的电镜研究
Varicus abnormality in sperm head, middle piece, principal piece and end piece was exhibited in SE microscopic studies after 2 weeks. 扫描电镜也示于服药后2周,精子头、体、尾异常的精子已开始增高。
The osmotic pressure value was significantly correlated with the type of sperm was 0. 93, and with the percentage of single crooked sperm head was 0. 94. 渗透压值与精子头部畸形类型高度相关(P<0.01),与精子头部弯曲且膨胀百分数的相关系数为-0.93,与精子头部单纯弯曲的百分数的相关系数为0.94。
The results showed that Na, Al, S, and K elements increased, Cl and Ca elements decreased in plasma membrane surfaces of sperm head and midpiece with heparin-caffeine capacitation; 结果表明,牛精子用肝素+咖啡因体外获能后,头部、中段质膜表面的Na、Al、S、K含量升高,Cl、Ca含量降低;
Establishment of the Two-dimensional Gel Electrophoretic Protein Map of the Human Sperm Head 应用双向电泳技术初步建立人精子头部蛋白质图谱
After 7 days, the activities of enzymes in testis and testicular sperm head counts and daily sperm production were observed. 连续染毒7天后将动物处死,测定睾丸中各种酶的活性,同时进行睾丸精子头计数并计算每日精子生成量。
At 110 seconds postinsemination, the sperm head and midpiece were fully incorporated into the egg cytoplasm and the fertilization cone tended to disappear. 授精110s,精子的头部和颈部已完全进入卵内,受精锥本身也渐趋消失,但精子尾部仍平躺于卵的表面。
The antisperm antibodies were reacted with the whole sperm, sperm head, sperm tail, equator and post nuclear area. 抗精子抗体与全精子、精子头、精子尾、赤道部或核后部反应;
Results: There was a significant difference in the sperm head unstained rate and hyposmotic swelling rate among fertile, infertile and azoospermia group ( P0.01). 结果:生育组、不育组、无精子症组伊红Y精子头部未着色率和低渗肿胀率的比较有显著性差异(P001)。
Sperm morphologic abnormality rate ( head, body and tail) was significantly higher in epilepsy treatment group than in control group, especially with the most significant head deformity. VPA组头部、体部、尾部及总异常精子形态率均显著高于正常对照组(均P0.01)。