Anaphylaxis
Antigen is the medical term meaning foreign substance.
Immune System
An antibody is a substance formed by the body in response to a perceived foreign substance. Antibodies are produced by the immune system to help identify and neutralize potentially harmful invaders, such as bacteria and viruses.
Antigen
A response of the body to an invasion of foreign substances is inflammation. The immune system will also produce more white blood cells and send them to the site of the infection.
Antigenan·ti·gen/ˈantijən/Noun:A toxin or other foreign substance that induces an immune response in the body, esp. the production of antibodies.
An antigen is a substance that triggers an immune response in the body, by stimulating the production of antibodies. This response helps the body to recognize and destroy harmful pathogens such as bacteria, viruses, or foreign substances.
a toxin or other foreign substance that induces an immune response in the body, especially the production of antibodies.
Antigen
An antigen is a substance that produces an immune response in the body, typically by binding to specific antibodies or activating immune cells. This immune response is essential for recognizing and eliminating foreign substances such as pathogens.
The disorder caused by the body's exaggerated response to foreign chemicals and proteins is called an allergy. Symptoms can range from mild reactions like itching and sneezing to severe reactions like anaphylaxis.
When the body detects a foreign substance, such as a pathogen or allergen, the immune system is activated. This typically involves the production of antibodies to target and neutralize the invader, as well as the recruitment of immune cells to help eliminate the threat. Inflammatory responses like swelling, redness, and fever may also occur as the body works to fight off the foreign substance.