leukocyte

简明释义

英[ˈluːkəsaɪt]美[ˈluːkəsaɪt]

n. 白血球

英英释义

单词用法

同义词

反义词

例句

1.The recent studies have shown that estrogen inhibits leukocyte adhesion.

近年的研究又发现，雌激素可抑制白细胞黏附。

2.The activation of leukocyte mediated by the cytokinesis the direct result of SIRS.

由炎性细胞因子介导的白细胞活化就是SIRS的直接结果。

3.You is the total amount of leukocyte, you should not write in the normal range.

你的白细胞总数是多少，你没写应该是在正常范围内。

4.This paper discusses to develop automatic classification system for true color Leukocyte image.

该文讨论并建立了一真彩色白细胞显微图像微机自动识别系统。

5.The heredity gene controls the human leukocyte antigen and deciding the characteristic of the human body odor by the immune system.

由遗传基因控制的人类白细胞抗原，经由免疫系统决定人体气味的特征。

6.The results show that there are natural antimicrobial substances in deer leukocyte granules, and the main components are peptides.

结果表明，在鹿白细胞颗粒中存在着天然抗微生物活性物质，其主要活性成分为多肽部分；

7.Certain types of cancer can lead to abnormal leukocyte levels in the body.

某些类型的癌症可能导致体内白细胞水平异常。

8.Doctors often analyze leukocyte counts to diagnose various medical conditions.

医生通常分析白细胞计数以诊断各种医疗状况。

9.An increase in leukocyte production may occur during a severe allergic reaction.

在严重过敏反应期间，白细胞的产生可能会增加。

10.The presence of high levels of leukocyte in the blood can indicate an infection.

血液中高水平的白细胞可能表明存在感染。

11.A complete blood count (CBC) includes the measurement of leukocyte levels.

完整的血液计数（CBC）包括对白细胞水平的测量。

作文

The human body is a complex system composed of various cells that work together to maintain health and combat diseases. One of the most critical types of cells in our immune system is the leukocyte, or white blood cell. These cells play a vital role in protecting the body against infections and foreign invaders. Understanding the function and importance of leukocytes can provide us with insight into how our immune system operates and why it is essential for our overall well-being.Leukocytes are produced in the bone marrow and are found throughout the body, including the bloodstream and lymphatic system. They are a key component of the immune response, acting as the body's defense mechanism. There are several types of leukocytes, each with specific functions. For example, neutrophils are the first responders to sites of infection, while lymphocytes, which include T cells and B cells, are crucial for adaptive immunity. This means they can remember past infections and respond more effectively if the same pathogen invades again.One of the fascinating aspects of leukocytes is their ability to move toward areas of infection or inflammation. This process, known as chemotaxis, allows them to quickly reach and neutralize threats. When an infection occurs, the body signals the leukocytes to migrate to the affected area, where they can engulf and destroy pathogens through a process called phagocytosis. This rapid response is essential for preventing the spread of infections and maintaining health.In addition to fighting infections, leukocytes also play a role in healing and tissue repair. After an infection has been cleared, these cells help to remove dead cells and debris, allowing for the regeneration of healthy tissue. This process is vital for recovery and can significantly influence the outcome of various diseases.However, the function of leukocytes is not always beneficial. In some cases, the immune system can become overactive, leading to autoimmune diseases where the body mistakenly attacks its own tissues. Conditions such as rheumatoid arthritis and lupus are examples of this phenomenon. Furthermore, certain cancers, like leukemia, involve the uncontrolled proliferation of leukocytes, which can disrupt normal bodily functions.Maintaining a healthy balance of leukocytes is crucial for optimal immune function. Factors such as diet, exercise, and stress levels can influence the production and activity of these cells. For instance, a diet rich in antioxidants and vitamins can support the immune system, while regular physical activity has been shown to enhance the circulation and function of leukocytes. Conversely, chronic stress can weaken the immune response, making the body more susceptible to infections.In conclusion, leukocytes are essential components of our immune system, playing a significant role in defending the body against infections and aiding in tissue repair. Understanding their functions helps us appreciate the complexity of our immune response and the importance of maintaining a healthy lifestyle to support these vital cells. As we continue to learn more about the immune system, the study of leukocytes will remain a crucial area of research, holding promise for advancements in medicine and treatments for various diseases.

人体是一个复杂的系统，由各种细胞组成，这些细胞共同维护健康并抵抗疾病。在我们免疫系统中，最关键的细胞类型之一是白细胞。这些细胞在保护身体免受感染和外来入侵者方面发挥着至关重要的作用。理解白细胞的功能和重要性，可以让我们深入了解免疫系统的运作，以及它对我们整体健康的重要性。白细胞在骨髓中产生，并分布在全身，包括血液和淋巴系统。它们是免疫反应的关键组成部分，充当身体的防御机制。白细胞有几种类型，每种类型都有特定的功能。例如，中性粒细胞是感染部位的第一响应者，而淋巴细胞，包括T细胞和B细胞，对于适应性免疫至关重要。这意味着它们可以记住过去的感染，并在相同病原体再次入侵时更有效地作出反应。白细胞的一个迷人之处在于它们向感染或炎症区域移动的能力。这一过程称为趋化作用，使它们能够迅速到达并消灭威胁。当感染发生时，身体会发出信号，促使白细胞迁移到受影响区域，在那里它们可以通过吞噬作用包围和摧毁病原体。这一迅速反应对于防止感染扩散和维持健康至关重要。除了对抗感染，白细胞还在愈合和组织修复中发挥作用。在感染清除后，这些细胞有助于清除死亡细胞和碎片，从而允许健康组织的再生。这个过程对恢复至关重要，并能显著影响各种疾病的结果。然而，白细胞的功能并不总是有益的。在某些情况下，免疫系统可能变得过于活跃，导致自身免疫性疾病，即身体错误地攻击自己的组织。类风湿性关节炎和狼疮就是这种现象的例子。此外，某些癌症，如白血病，涉及白细胞的无控制增殖，这可能干扰正常的身体功能。维持白细胞的健康平衡对于最佳免疫功能至关重要。饮食、锻炼和压力水平等因素会影响这些细胞的产生和活动。例如，富含抗氧化剂和维生素的饮食可以支持免疫系统，而规律的身体活动已被证明增强了白细胞的循环和功能。相反，慢性压力可能削弱免疫反应，使身体更容易受到感染。总之，白细胞是我们免疫系统的重要组成部分，在抵御感染和帮助组织修复方面发挥着重要作用。了解它们的功能有助于我们欣赏免疫反应的复杂性以及保持健康生活方式以支持这些重要细胞的重要性。随着我们对免疫系统的了解不断深入，白细胞的研究将继续成为一个关键领域，承载着医学和各种疾病治疗进展的希望。