cercariae

简明释义

英[ˌsɜrˈkɛr.i.ə]美[ˌsɜrˈkɛr.i.ə]

摇尾幼虫

尾蚴（cercaria 的名词复数）

英英释义

单词用法

同义词

反义词

例句

1.CONCLUSION: Cellular immune response in the skin of the mice immunized with UV-attenuated cercariae might play an important role in the protective immunity against challenge infection.

结论：提示皮肤组织的细胞免疫反应在血吸虫减毒尾蚴免疫的宿主抗攻击感染保护性免疫中起重要作用。

2.A new species of the Triculinae of freshwater snails thatharbours cercariae of lung flukes from Fujian, China;

携带肺吸虫尾蚴的淡水螺类拟钉螺亚科一新种（前鳃亚纲；中腹足目；圆口螺科；拟钉螺亚科）

3.AIM: to explore the role of the skin tissue from the host immunized with UV-attenuated schistosome cercariae against the challenge infection.

目的：探讨紫外线减毒血吸虫尾蚴免疫宿主的皮肤组织在抗攻击感染中的作用。

4.The miracidia can infect Oncomelania snails and the cercariae enable Apodemus agrarius and mice to develop infection.

虫卵孵出的毛蚴能感染钉螺，逸出的尾蚴能再感染姬鼠和小白鼠。

5.ObjectiveTo observe the effect of varnish "Fangyouling" preventing skin invasion from Schistosoma cercariae.

目的观察“防蚴灵”涂肤剂预防血吸虫尾蚴感染的效果。

6.CONCLUSION: Cellular immune response in the skin of the mice immunized with UV-attenuated cercariae might play an important role in the protective immunity against challenge infection.

结论：提示皮肤组织的细胞免疫反应在血吸虫减毒尾蚴免疫的宿主抗攻击感染保护性免疫中起重要作用。

7.These organisms penetrate into snails, multiply, and develop into cercariae, the infective form for man.

这些毛蚴进体螺体，繁殖和发育对人类有传染性的尾蚴。

8.Objective: To find out the major antigenic molecules of radiation attenuated cercariae, and provide some useful candidate antigens for developing schistosomiasis vaccine.

目的：寻找照射致弱尾蚴中起免疫保护作用的抗原分子，为血吸虫病疫苗研究提供新的候选抗原。

9.Fresh-water snails were collected from the fields for examining cercariae.

现场采集标本，剖检淡水螺类，检查并殖吸虫尾蚴感染情况。

10.The worm reduction rate after challenging with mainland strain cercariae in mice immunized with rSj26 was 26~32%, similar to that in mice immunized with 24-26 kDa antigen.

若以两种抗原加福氏佐剂分别免疫小鼠，以日本血吸虫大陆株尾蚴攻击感染，减虫率相似（26～32％），表明两种抗原存在一定程度的交叉免疫保护性。

11.The presence of cercariae in a lake indicates a potential risk for swimmers.

湖中存在尾蚴表明游泳者面临潜在风险。

12.In freshwater environments, cercariae can infect snails, which serve as intermediate hosts.

在淡水环境中，尾蚴可以感染蜗牛，蜗牛作为中间宿主。

13.The life cycle of the parasite includes a stage where it releases cercariae, which are free-swimming larvae.

这种寄生虫的生命周期包括一个阶段，在这个阶段它释放出尾蚴，这些是自由游动的幼虫。

14.Research shows that cercariae can survive in various environmental conditions.

研究表明，尾蚴可以在各种环境条件下存活。

15.Humans can become infected when they come into contact with water containing cercariae.

人类在接触含有尾蚴的水时可能会感染。

作文

In the study of parasitology, understanding the life cycle of parasites is crucial for developing effective control measures. One such stage that often comes into focus is the larval stage known as cercariae. These are free-swimming larvae that emerge from the intermediate host, usually a snail, and play a significant role in the transmission of certain parasitic infections. The term cercariae refers specifically to these juvenile forms of trematodes, or flukes, which can infect various definitive hosts, including humans. The life cycle of trematodes typically begins when eggs are excreted in the feces of an infected host. When these eggs find their way into freshwater environments, they hatch into miracidia, which then seek out a suitable snail host. Inside the snail, they undergo several transformations, eventually developing into cercariae. This transformation is a fascinating example of how parasites adapt to their environments to maximize their chances of survival and reproduction.Once the cercariae are released from the snail, they swim freely in the water, seeking out their next host. This stage is critical because it is during this phase that they can infect a variety of animals, including mammals and birds. In humans, infection can occur through skin contact with contaminated water, leading to diseases such as schistosomiasis. The symptoms of schistosomiasis can vary widely, ranging from mild irritation to severe health complications, depending on the species of fluke involved and the intensity of the infection.Understanding the biology and behavior of cercariae is essential for public health officials, especially in regions where these parasites are endemic. Preventative measures can be implemented by controlling the snail populations or educating communities about avoiding contact with potentially contaminated water sources. Furthermore, research into the life cycle of cercariae can lead to the development of targeted treatments and vaccines that could significantly reduce the incidence of diseases caused by these parasites.In conclusion, the study of cercariae provides valuable insights into the complex interactions between parasites, their hosts, and the environment. By deepening our understanding of this crucial larval stage, we can better address the challenges posed by parasitic infections and protect public health. The journey of cercariae from their emergence in freshwater to their potential impact on human health exemplifies the intricate balance of ecosystems and the importance of maintaining this balance to prevent disease outbreaks.

在寄生虫学研究中，理解寄生虫的生命周期对于制定有效的控制措施至关重要。其中一个常常受到关注的阶段是被称为尾蚴的幼虫阶段。这些是从中间宿主（通常是蜗牛）中出现的游泳自由的幼虫，在某些寄生虫感染的传播中起着重要作用。术语尾蚴专指这些吸虫的幼年形态，它们可以感染各种最终宿主，包括人类。吸虫的生命周期通常始于受感染宿主的粪便中排出的卵。当这些卵进入淡水环境时，它们孵化成毛蚴，然后寻找合适的蜗牛宿主。在蜗牛体内，它们经历几次转变，最终发展成尾蚴。这种转变是寄生虫如何适应其环境以最大化生存和繁殖机会的迷人例子。一旦尾蚴从蜗牛中释放出来，它们在水中自由游动，寻找下一个宿主。这一阶段至关重要，因为正是在这一阶段它们可以感染多种动物，包括哺乳动物和鸟类。在人类中，感染可以通过与受污染水源的皮肤接触而发生，导致如血吸虫病等疾病。血吸虫病的症状可能差异很大，从轻微的刺激到严重的健康并发症，具体取决于涉及的吸虫种类和感染的强度。了解尾蚴的生物学和行为对公共卫生官员至关重要，尤其是在这些寄生虫地方性流行的地区。可以通过控制蜗牛种群或教育社区避免接触潜在受污染水源来实施预防措施。此外，对尾蚴生命周期的研究可以导致针对性的治疗和疫苗的发展，从而显著降低由这些寄生虫引起的疾病发生率。总之，研究尾蚴提供了对寄生虫、宿主和环境之间复杂相互作用的宝贵见解。通过加深我们对这一关键幼虫阶段的理解，我们可以更好地应对寄生虫感染带来的挑战，并保护公共健康。尾蚴从淡水中出现到对人类健康的潜在影响的旅程，体现了生态系统的复杂平衡以及维护这一平衡以防止疾病爆发的重要性。