antigen

antigen的音标为[ˈæntɪdʒɪn] ，基本翻译为“抗原”或“抗体生成物”。速记技巧可以考虑使用谐音记忆法，将其译为“俺听基因”，这样更便于记忆。

Antigen的词源：

Antigen这个词源于希腊语“anti”（反对）和“gen”（产生），表示“对抗物质”或“免疫原”。

变化形式：

Antigen的名词形式是antigen，没有变化。形容词形式是antigenic，在词尾加“-ic”表示性质。

相关单词：

1. Antibody：抗体，是一种免疫球蛋白，与抗原结合以产生免疫反应。

2. Immunization：免疫接种，通过注射疫苗或其他免疫原来增强免疫系统。

3. Immunity：免疫力，指身体对疾病的自然防御能力。

4. Allergy：过敏反应，一种免疫反应，当身体对某些物质（如食物、药物或空气中的过敏原）产生过度反应时。

5. Infection：感染，一种由细菌、病毒或其他微生物引起的疾病过程。

6. Sera：血清，一种从血液或其他液体中提取的液体，含有免疫球蛋白和其他蛋白质。

7. Antigenic determinant：抗原决定基，指抗原分子上能够引起免疫反应的特定部分。

8. Antigen-antibody complex：抗原抗体复合物，由抗原和抗体结合形成的物质，常用于免疫检测和免疫分析。

9. Antigen-presenting cell：抗原提呈细胞，一种细胞类型，能够将抗原呈递给T细胞，参与免疫反应。

10. Immunoglobulin：免疫球蛋白，一种蛋白质，存在于抗体中，参与免疫反应。

以上这些词汇都与antigen有着密切的联系，共同构成了免疫学的词汇基础。

Antigen: 常用短语、双语句子及英文小作文

常用短语：

1. react to 对...作出反应

2. be exposed to 暴露于

3. be in contact with 与...接触

4. mount an immune response 引发免疫反应

5. present an antigen 呈现抗原

6. immune system 免疫系统

7. be immunized against 被...免疫

双语句子：

1. I was exposed to a new antigen in my diet that I had never encountered before.

2. The vaccine helped me mount an immune response against this antigen.

3. The body"s immune system is constantly in contact with foreign substances.

4. Antigens are important for the immune system to recognize and respond to foreign substances.

5. Having been immunized against the flu, I feel much safer in the winter months.

6. Understanding the role of antigens in the immune system is crucial for maintaining good health.

英文小作文：

Antigens and the Immune System

Antigens are proteins or substances that trigger an immune response when they are encountered by the immune system. They play a crucial role in maintaining good health by alerting the immune system to foreign substances that could potentially cause harm. When antigens are presented to the immune system, they trigger a response that involves the production of antibodies and other cells that fight off infection or disease. Understanding the role of antigens in the immune system is crucial for maintaining good health and preventing diseases such as infections and autoimmune disorders. Antigens can come from various sources, including bacteria, viruses, toxins, and foreign substances in the environment and food. The immune system is constantly in contact with antigens throughout life, but it can become weakened or overwhelmed when it is not functioning properly. Therefore, it is important to maintain a healthy immune system through proper nutrition, exercise, and regular check-ups with a healthcare provider.