blastocyst

简明释义

英[ˈblæstəʊˌsɪst]美[ˈblæstəˌsɪst;ˈblæstoʊˌsɪst]

n. 囊胚；胚泡

英英释义

单词用法

同义词

反义词

例句

1.To observe the mouse blastocyst growth behavior on primary mouse embryonic fibroblast feeder layers (PMEF).

观察鼠囊胚在小鼠原代胎儿成纤维细胞饲养层上的生长行为。

2.Shortly after implantation the blastocyst wall, the trophoblast, consists of two layers of cells.

植入之后不久，胚囊的壁，即滋养细胞含有两层细胞。

3.Blastocyst implantation capacity was evaluated by calculating the percentage of embryos with attachment or outgrowth.

用粘附、扩展胚胎的百分数来评价胚泡的着床能力。

4.Results a DIC atlas of preimplantation embryos in full developmental stages was formed from preovulatory oocyte to expanded blastocyst.

结果记录排卵前卵母细胞至扩展囊胚的小鼠早期胚发育全过程，制成微分干涉差显微图谱。

5.To observe the effect of Bushen Huoxue prescription on blastocyst nidation in pregnancy mice.

观察中药补肾活血方对妊娠大鼠胚泡着床率的影响。

6.The result showed that the mouse embryonic fibroblasts MEF group achieved significantly higher blastocyst formation rate 38.

结果表明：胎鼠成纤维细胞MEF培养组的囊胚率和胚胎细胞数38。

7.The cells of this cluster inside next to the fluid-filled cavity is a region of the blastocyst called the inner cell mass.

在充满液体的腔体旁边的这个簇状细胞是囊胚的一个区域，称为内细胞团。

8.A successful implantation occurs when the blastocyst attaches to the uterine wall.

当胚泡附着在子宫壁上时，就会发生成功的植入。

9.The inner cell mass of the blastocyst will eventually form the embryo.

胚泡的内细胞团最终将形成胚胎。

10.Scientists study the blastocyst stage to understand early human development.

科学家研究胚泡阶段以了解早期人类发育。

11.The fertilized egg develops into a blastocyst after about five days.

受精卵在大约五天后发育成一个胚泡。

12.In IVF procedures, doctors often transfer a healthy blastocyst to the uterus.

在试管婴儿程序中，医生通常将一个健康的胚泡移植到子宫中。

作文

The journey of human development begins at the moment of conception, a fascinating process that unfolds in several stages. One of the most critical stages is the formation of the blastocyst, which plays a significant role in the early stages of embryonic development. The blastocyst is a hollow sphere of cells that forms about five to six days after fertilization. This structure is essential for implantation into the uterine wall, marking the transition from a single-cell zygote to a multi-cellular organism.Initially, when a sperm fertilizes an egg, it creates a zygote, which undergoes a series of divisions known as cleavage. These divisions do not increase the size of the embryo; instead, they produce smaller cells called blastomeres. As these divisions continue, the cells begin to organize themselves into a more complex structure. By the time the embryo reaches the stage of the blastocyst, it consists of approximately 100 to 200 cells.The blastocyst is characterized by two distinct cell types: the inner cell mass and the trophoblast. The inner cell mass is the group of cells that will eventually develop into the embryo itself, while the trophoblast is responsible for forming the placenta, which provides nutrients and support to the developing fetus. The ability of the blastocyst to implant into the uterine lining is crucial for establishing a successful pregnancy.Understanding the role of the blastocyst is vital not only in the context of human reproduction but also in the fields of reproductive medicine and stem cell research. For instance, scientists have been able to derive embryonic stem cells from the inner cell mass of the blastocyst, which hold immense potential for regenerative medicine. These stem cells can differentiate into various cell types, offering hope for treatments for diseases such as Parkinson's and diabetes.Moreover, research on the blastocyst has provided insights into the causes of infertility. Factors such as genetic abnormalities or issues with the uterine environment can prevent the successful implantation of the blastocyst. By studying these factors, medical professionals can develop better diagnostic tools and treatment options for couples struggling to conceive.In conclusion, the blastocyst represents a pivotal moment in human development, serving as a bridge between fertilization and the establishment of a viable pregnancy. Its formation marks the beginning of a complex journey that will eventually lead to the birth of a new individual. As we continue to explore the mysteries of human development, the blastocyst remains a key focus for researchers and medical practitioners alike, highlighting its importance in both understanding our origins and advancing medical science.

人类发展的旅程始于受精的那一刻，这是一个在几个阶段中展开的迷人过程。其中一个最关键的阶段是胚泡的形成，它在胚胎发育的早期阶段发挥着重要作用。胚泡是一个空心的细胞球，约在受精后五到六天形成。这个结构对于植入子宫壁至关重要，标志着从单细胞合子到多细胞生物的过渡。最初，当一个精子使一个卵子受精时，会形成一个合子，随后经历一系列称为裂变的分裂。这些分裂并不会增加胚胎的大小；相反，它们产生了更小的细胞，称为胚泡细胞。当这些分裂继续进行时，细胞开始组织成更复杂的结构。当胚胎达到胚泡阶段时，它大约由100到200个细胞组成。胚泡的特点是有两种不同的细胞类型：内细胞团和滋养层细胞。内细胞团是最终将发展成胚胎的一组细胞，而滋养层细胞则负责形成胎盘，胎盘为发育中的胎儿提供营养和支持。胚泡能够植入子宫内膜的能力对于建立成功的妊娠至关重要。理解胚泡的作用不仅在于人类生殖的背景，也在于生殖医学和干细胞研究等领域。例如，科学家们已经能够从胚泡的内细胞团中提取胚胎干细胞，这些细胞在再生医学中具有巨大潜力。这些干细胞可以分化成各种细胞类型，为治疗帕金森病和糖尿病等疾病带来了希望。此外，关于胚泡的研究为不孕症的原因提供了见解。基因异常或子宫环境的问题等因素可能会阻止胚泡的成功植入。通过研究这些因素，医学专业人员可以开发出更好的诊断工具和治疗方案，以帮助正在努力怀孕的夫妇。总之，胚泡代表了人类发展的一个关键时刻，它作为受精和建立可行妊娠之间的桥梁。它的形成标志着一段复杂旅程的开始，这段旅程最终将导致新个体的出生。随着我们继续探索人类发展的奥秘，胚泡仍然是研究人员和医疗从业者关注的重点，突显了它在理解我们起源和推动医学科学进步中的重要性。