ketireaktsiooni

Ketireaktsioon is a term used in the field of immunology to describe the response of the immune system to a specific antigen, such as a foreign substance or a pathogen. This response is typically characterized by the production of antibodies, which are proteins designed to neutralize or eliminate the antigen. Ketireaktsioon can be either specific or non-specific. Specific ketireaktsioon occurs when the immune system recognizes a particular antigen and produces antibodies tailored to that antigen. This is the basis for vaccines, which stimulate a specific ketireaktsioon to protect against a specific disease. Non-specific ketireaktsioon, on the other hand, is a general response to any antigen and is part of the innate immune system's first line of defense. This response is less targeted and more immediate, involving cells like macrophages and natural killer cells. Ketireaktsioon is crucial for maintaining health by protecting the body from infections and diseases. However, in some cases, an overactive or inappropriate ketireaktsioon can lead to autoimmune diseases, where the immune system mistakenly attacks the body's own tissues. Understanding ketireaktsioon is essential for developing effective treatments for various immune-related disorders.