phagocytosis

简明释义

英[ˌfæɡəsaɪˈtəʊsɪs]美[ˌfæɡəsaɪˈtoʊsɪs]

n. [细胞] 吞噬作用

复 数 p h a g o c y t o s e s

英英释义

单词用法

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例句

1.Objective To study the influence of IL-2 on tie human neutrophil phagocytosis.

目的观察IL-2对人中性粒细胞吞噬功能的影响。

2.Some substances can enter cells by the process of phagocytosis.

某些物质能在吞噬作用过程中进入细胞。

3.And filtrate of P. ances culture also enhanced the phagocytosis of THP-1 cells.

培养滤液均能促进THP - 1细胞的吞噬功能，并且促进作用的强弱与滤液浓度有关。

4.Small granular cells have the function of phagocytosis able to release electron dense granules by exocytosis when stimulated by antigen.

小颗粒细胞具有吞噬功能，在受到抗原刺激时可以胞吐方式释放细胞中的电子致密颗粒。

5.Large granular cells have no function of phagocytosis.

大颗粒细胞无吞噬功能。

6.Objective to investigate the effects of hyaluronan on phagocytosis of macrophages and to explore the mechanism.

目的研究透明质酸对巨噬细胞吞噬功能的影响及其机制。

7.The phagocytosis of macrophages of lead-treated significantly decreased both at cellular and whole animal levels.

从细胞和整体水平都显示铅染毒组巨噬细胞吞噬功能明显降低。

8.More and more lines of evidences suggest that PLD may be pivotal on multiple specialized steps in receptor mediated phagocytosis and exocytosis.

大量研究表明PLD激活是受体介导的胞吞和胞吐过程中关键的一步。

9.The phagocytic index and phagocytosis rate in folium isatidis and herba taraxaci group were higher than those in the control group(P<0.01).

单方大青叶组、蒲公英组分别与对照组比较都具有统计学差异（P均＜0．01）；

10.During the immune response, white blood cells perform phagocytosis to engulf pathogens.

在免疫反应中，白细胞通过吞噬作用来吞噬病原体。

11.The process of phagocytosis is crucial for removing dead cells from tissues.

吞噬作用的过程对于清除组织中的死细胞至关重要。

12.In laboratory studies, scientists observed phagocytosis in action using fluorescent markers.

在实验室研究中，科学家们使用荧光标记观察到吞噬作用的实际过程。

13.Bacteria can evade the immune system by inhibiting phagocytosis.

细菌可以通过抑制吞噬作用来逃避免疫系统。

14.Macrophages are known for their ability to perform phagocytosis on large particles.

巨噬细胞以其对大颗粒进行吞噬作用的能力而闻名。

作文

Phagocytosis is a vital biological process through which certain cells, known as phagocytes, engulf and digest foreign particles, bacteria, and dead or dying cells. This mechanism is crucial for maintaining the body's immune system and overall health. Phagocytosis plays a significant role in our body’s defense against infections and diseases. When pathogens invade the body, phagocytes are among the first responders, identifying and eliminating these threats to prevent illness. The process of phagocytosis (吞噬作用) begins when a phagocyte recognizes a harmful particle. This recognition is often facilitated by receptors on the surface of the phagocyte that bind to specific markers on the pathogen. Once the pathogen is identified, the phagocyte extends its membrane around the particle, forming a pocket that eventually engulfs the pathogen. This pocket then pinches off from the cell membrane, creating a vesicle known as a phagosome. Inside the phagosome, the engulfed material is isolated from the rest of the cell. The phagosome then fuses with another type of vesicle called a lysosome, which contains digestive enzymes. This fusion creates a phagolysosome, where the enzymes break down the engulfed material into smaller, non-toxic components. These components can then be utilized by the cell for energy or other cellular processes, or they can be expelled from the cell as waste. The significance of phagocytosis (吞噬作用) cannot be overstated. It not only helps in clearing away pathogens but also plays a role in tissue remodeling and repair. For example, during inflammation, phagocytes help remove dead cells and debris from damaged tissues, facilitating healing. Additionally, they present antigens from the pathogens to other immune cells, thus activating the adaptive immune response, which is more specific and long-lasting. Moreover, phagocytosis (吞噬作用) is also involved in various diseases. In some cases, the ability of phagocytes to engulf pathogens may be impaired, leading to increased susceptibility to infections. On the other hand, an overactive phagocytic response can contribute to autoimmune diseases, where the immune system mistakenly attacks the body’s own healthy cells. Therefore, understanding the mechanisms underlying phagocytosis (吞噬作用) is crucial for developing therapeutic strategies for various health conditions. In conclusion, phagocytosis (吞噬作用) is a fundamental process that underlies our immune defense, aiding in the removal of harmful agents and supporting tissue repair. By studying this process, scientists can gain insights into the workings of the immune system and develop new treatments for infections and autoimmune diseases. The exploration of phagocytosis (吞噬作用) not only enhances our understanding of biology but also opens doors for advancements in medical science, ultimately contributing to better health outcomes for individuals and communities.