antigenicity

antigenicity的音标为[ˌæntɪdʒɪnɪˈsɪtɪ] ，基本翻译为“抗原性”，速记技巧为“抗=an（一）+抗原（t）”。

Antigenicity这个词的词源可以追溯到拉丁语“anti” (反对) 和“genus” (类型)，结合起来表示“与某种类型相对抗”。这个词的含义通常是指生物体或其产物具有引发免疫反应的能力。

变化形式：词形无变化。

相关单词：

1. Antibody：抗体，由免疫系统产生，专门对抗特定的抗原。

2. Immunity：免疫力，指生物体对抗某种抗原的能力。

3. Allergy：过敏反应，一种免疫反应，通常由接触某些抗原（如花粉或食物）引起。

4. Inhibition：抑制，指阻止免疫反应的过程或发生。

5. Reaction：反应，这里指的是免疫系统的反应，包括抗原抗体反应等。

6. Sensitivity：敏感性，指生物体对特定抗原的敏感程度。

7. Immunization：免疫接种，一种预防免疫疾病的方法，通过注射抗原使身体产生抗体。

8. Immunotherapy：免疫疗法，一种治疗免疫疾病的方法，通过调节免疫反应来达到治疗目的。

9. Pathogen：病原体，指引发疾病的抗原或微生物。

10. Evasion：逃避，指抗原试图逃避免疫系统的识别和攻击。

以上这些单词都与antigenicity这个概念有直接或间接的联系。它们共同构成了免疫学领域的丰富词汇库。

antigenicity常用短语：

1. antigenicity of protein

2. antigenicity of DNA

3. antigenicity of virus

4. antigenicity of bacteria

5. antigenicity of cells

6. antigenicity of antigens

7. antigenicity of antibodies

例句：

1. The antigenicity of the protein is determined by its amino acid sequence.

2. The DNA sequence determines the antigenicity of the virus.

3. The bacteria with high antigenicity can cause infections easily.

4. The cells with low antigenicity can easily escape from the immune system.

5. Antigens are recognized by antibodies, which are produced by the immune system.

6. The antigenicity of antibodies determines their ability to bind to antigens and activate immune response.

7. The antigenic differences between viruses are responsible for their different diseases and symptoms.

英文小作文：

Antigens and Antibodies: The Immune System"s Guardians of Health

Antigens are proteins that trigger an immune response when they are recognized by antibodies produced by the immune system. These antibodies, in turn, activate the immune response, which can include inflammation, cell activation, and production of cytokines and other immune mediators. Antigens can be identified by their unique amino acid sequences, which determine their antigenicity.

On the other hand, antibodies are large proteins that bind to antigens with high affinity and specificity, thus providing a highly effective defense against infections and diseases caused by viruses, bacteria, and other pathogens. Antibodies can be produced by B cells or plasma cells, and they can persist in the body for long periods of time, providing a continuous defense against the same antigens that triggered their production.

The immune system is constantly monitoring the body for potential threats, and when antigens are detected, it immediately launches an attack against them to protect the body from infection and disease. However, if antigens are too numerous or too strong, the immune system may overreact, causing autoimmune diseases or other adverse effects on the body. Therefore, it is crucial to maintain a balance between the immune system and the antigens in the body to ensure optimal health and well-being.