oocyst

简明释义

英[ˈəʊəˌsɪst]美[ˈoəˌsɪst]

n. [无脊椎] 卵囊

英英释义

单词用法

同义词

反义词

例句

1.Wilmut said there were so many failures because it was difficult to ensure that the empty oocyst and the donor cell were at the same stage of the cell division cycle.

威尔·马特说之所以有这么多的试验失败，是因为很难保证空卵囊和供体细胞能处在细胞分裂周期的同一阶段。

2.Wilmut said there were so many failures because it was difficult to ensure that the empty oocyst and the donor cell were at the same stage of the cell division cycle.

威尔·马特说之所以有这么多的试验失败，是因为很难保证空卵囊和供体细胞能处在细胞分裂周期的同一阶段。

3.In high dosage, the treated group has less pathological change, and the average oocyst number is clearly higher than that of the control group.

较高剂量下，处理组病变略轻，而平均卵囊数明显高于未处理对照组。

4.The life cycle of the parasite includes the formation of an oocyst (囊子) that can survive in harsh environments.

这种寄生虫的生命周期包括形成一个oocyst（囊子），可以在恶劣环境中存活。

5.When water is contaminated, it may contain infectious oocysts (囊子) that pose a health risk.

当水被污染时，它可能含有感染性的oocysts（囊子），这对健康构成威胁。

6.Researchers are studying the resistance of oocysts (囊子) to various disinfectants.

研究人员正在研究oocysts（囊子）对各种消毒剂的抵抗力。

7.Infection can occur when humans ingest food or water contaminated with oocysts (囊子).

当人类摄入被oocysts（囊子）污染的食物或水时，可能会发生感染。

8.The presence of oocysts (囊子) in stool samples indicates a potential infection.

粪便样本中存在oocysts（囊子）表明可能存在感染。

作文

The study of parasitology often introduces us to various life stages of parasites, one of which is the oocyst. An oocyst is a specific stage in the life cycle of certain protozoan parasites, particularly those belonging to the genus *Cryptosporidium* and *Toxoplasma*. These microscopic structures are crucial for the transmission of these parasites, as they are the resilient form that can survive outside the host organism. Understanding the role of the oocyst is essential for both public health and environmental science, especially considering how easily these organisms can spread through contaminated water and food sources. The formation of an oocyst occurs when the parasite undergoes sexual reproduction within the intestines of the host. Once formed, the oocyst is expelled from the host through feces, where it can remain viable in the environment for extended periods. This resilience makes the oocyst a significant concern for water quality and sanitation efforts. For instance, outbreaks of cryptosporidiosis, caused by *Cryptosporidium*, have been linked to swimming pools and drinking water supplies contaminated with oocysts. In addition to its implications for human health, the oocyst also plays a role in understanding animal health. Many animals, including livestock and pets, can harbor these parasites, leading to zoonotic diseases that can affect humans. The presence of oocysts in animal feces can indicate potential risks for transmission to humans, emphasizing the need for effective monitoring and control measures in agricultural settings. Research into the lifecycle of these parasites has revealed that the oocyst is not just a passive structure but an active player in the survival and propagation of the species. Scientists have discovered that the oocyst can remain dormant for long periods, only to reactivate when conditions are favorable for infection. This ability to withstand harsh environmental conditions, such as extreme temperatures and desiccation, highlights the evolutionary adaptations that have allowed these parasites to thrive. Moreover, advancements in molecular techniques have enabled researchers to study oocysts at a genetic level, providing insights into their biology and potential vulnerabilities. This research is crucial for developing targeted treatments and preventive measures against infections caused by these parasites. For example, understanding the genetic makeup of oocysts could lead to the development of vaccines or more effective sanitation practices to eliminate them from our water supplies. In conclusion, the oocyst is a vital component in the life cycle of certain protozoan parasites, serving as a key factor in their transmission and survival. Its resilience poses significant challenges for public health, animal health, and environmental safety. By comprehensively studying the oocyst, we can better understand how to combat the diseases associated with these parasites and protect both human and animal populations from their effects. As research continues to evolve, the importance of the oocyst in parasitology will undoubtedly remain a focal point for scientists and health professionals alike.

在寄生虫学的研究中，我们常常会接触到寄生虫的不同生活阶段，其中一个就是卵囊。卵囊是某些原生动物寄生虫生命周期中的特定阶段，特别是属于*隐孢子虫*和*弓形虫*属的那些。这些微小的结构对于这些寄生虫的传播至关重要，因为它们是能够在宿主生物体外存活的坚韧形式。理解卵囊的作用对于公共健康和环境科学至关重要，尤其是考虑到这些生物如何通过受污染的水和食物来源轻易传播。 卵囊的形成发生在寄生虫在宿主的肠道内进行有性繁殖时。一旦形成，卵囊就会通过粪便从宿主体内排出，并且可以在环境中保持活力很长时间。这种韧性使得卵囊成为水质和卫生工作中的重要关注点。例如，由*隐孢子虫*引起的隐孢子虫病爆发与游泳池和饮用水源中被卵囊污染有关。 除了对人类健康的影响，卵囊在动物健康的理解中也发挥着作用。许多动物，包括家畜和宠物，可能携带这些寄生虫，导致可能影响人类的动物源性疾病。动物粪便中存在的卵囊可能表明向人类传播的潜在风险，这强调了在农业环境中有效监测和控制措施的必要性。 对这些寄生虫生命周期的研究表明，卵囊不仅仅是一个被动的结构，而是在物种的生存和传播中扮演着积极的角色。科学家们发现，卵囊可以在长时间内保持休眠状态，只有在适合感染的条件下才会重新激活。这种在恶劣环境条件下（如极端温度和干燥）生存的能力突显了这些寄生虫能够繁衍生息的进化适应。 此外，分子技术的进步使研究人员能够在基因水平上研究卵囊，提供了对其生物学和潜在脆弱性的深入了解。这项研究对于开发针对这些寄生虫引起的感染的靶向治疗和预防措施至关重要。例如，了解卵囊的遗传组成可能导致疫苗或更有效的卫生实践的发展，以消除我们的水源中的卵囊。 总之，卵囊是某些原生动物寄生虫生命周期中的重要组成部分，是它们传播和生存的关键因素。其韧性给公共健康、动物健康和环境安全带来了重大挑战。通过全面研究卵囊，我们可以更好地理解如何对抗与这些寄生虫相关的疾病，并保护人类和动物群体免受其影响。随着研究的不断发展，卵囊在寄生虫学中的重要性无疑将继续成为科学家和卫生专业人士关注的焦点。