Antigen meaning refers to molecules in your blood that provoke an immune response. This indicates that your immune system does not recognise this foreign body and is preparing your body to combat it. An antigen can originate within your body or be a particle from the environment. Read on to understand the definition of antigen that highlights how these molecules, whether internal or external, prompt your immune system to defend against unrecognised substances.
What Is An Antigen?
An antigen is a type of molecule that triggers an immune response and initiates the production of antibodies. An antibody is a large protein molecule that adheres to the surface of pathogens such as fungi, viruses, bacteria, and other foreign substances to prevent any harm to the body.
Let’s simplify the antigen explanation with an example. If you get cut on a rusted nail, you may become exposed to tetanus-causing bacteria. In order to protect you from this serious disease, your body begins producing antibodies that neutralise the bacteria.
Based on their origin, antigens are classified into different types, including tumour antigens, auto-antigens, endogenous antigens, native antigens, and exogenous antigens. Immunogenicity is influenced by age, with older people generally having lower immunogenicity. Antigen testing is performed to screen and monitor certain conditions, diagnose viral infections, and determine whether a donor is suitable for a transplant.
Conclusion
We hope you now understand everything related to the meaning of antigen. Your doctor may order antigen testing to detect antigens that cause an immune response in your body. If you have been recently exposed to dangerous antigens, it may be pragmatic to access appropriate and affordable healthcare through a health insurance policy.
Disclaimer: The information provided in this blog is for educational and informational purposes only. It is not intended as a substitute for professional advice, diagnosis, or treatment. Please consult your general physician or another certified medical professional for any questions regarding a medical condition. Relying on any information provided in this blog is solely at your own risk, and ICICI Lombard is not responsible for any effects or consequences resulting from the use of the information shared.