ANAMNESTIC REACTION Meaning and
Definition
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Anamnestic reaction is a term used in immunology to describe the rapid and heightened immune response that occurs upon re-exposure to an antigen (a foreign substance that triggers an immune response in the body). This reaction is also known as a memory response and is a crucial part of the adaptive immune system.
When the body is first exposed to an antigen, such as through infection or vaccination, the immune system mounts an immune response to combat the foreign invader. During this initial response, specialized immune cells called B cells and T cells are activated and produce antibodies or cytotoxic cells, respectively, to eliminate the antigen.
However, after the initial encounter, a subset of B and T cells, known as memory cells, are generated and persist in the body. These memory cells "remember" the specific antigen and remain dormant until re-exposure occurs. Upon subsequent encounters with the same antigen, the memory cells rapidly recognize and mount a stronger immune response.
The anamnestic reaction is characterized by a faster and more efficient production of antibodies or cytotoxic cells compared to the primary immune response. This heightened response leads to a quicker elimination of the antigen, resulting in better protection against the invading pathogen.
Anamnestic reactions play a critical role in the establishment of immunological memory, allowing the immune system to respond rapidly and effectively to prevent reinfection or reduce the severity of subsequent infections.
Common Misspellings for ANAMNESTIC REACTION
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Etymology of ANAMNESTIC REACTION
The word "anamnestic" comes from the Greek word "anamnēsis", which means "a calling to mind", "recollection", or "remembrance". The term is derived from the Greek verb "anamimnēskō", meaning "to remember" or "to recall". In medical terminology, an "anamnestic reaction" refers to an immune response in which the body produces a strong, memory-based response to an antigen (a substance that triggers an immune reaction) that it has previously encountered. This term emphasizes the role of the body's memory in generating a quick and potent immune reaction upon re-exposure to a specific antigen.
Similar spelling word for ANAMNESTIC REACTION
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