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HomeHomework HelpbiologyAdaptive Immunity

Adaptive Immunity

Adaptive immunity involves recognizing and remembering specific pathogens, allowing the body to mount targeted responses upon reinfection. This system leads to the development of vaccines, a crucial technology for preventing infectious diseases and protecting public health.

intermediate
3 hours
Biology
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Overview

Adaptive immunity is a crucial part of the immune system that develops over time, allowing the body to recognize and respond to specific pathogens. It involves the activation of lymphocytes, particularly B cells and T cells, which work together to neutralize threats and create immunological memory. ...

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Key Terms

Lymphocyte
A type of white blood cell involved in the immune response.

Example: B cells and T cells are types of lymphocytes.

Antibody
A protein produced by B cells that binds to specific antigens to neutralize pathogens.

Example: Antibodies can block viruses from entering cells.

Memory Cell
A long-lived immune cell that remembers past infections and responds quickly upon re-exposure.

Example: Memory T cells can quickly reactivate during a second infection.

Pathogen
An organism that causes disease, such as bacteria or viruses.

Example: Influenza virus is a common respiratory pathogen.

Vaccination
The process of introducing a vaccine to stimulate an immune response.

Example: The flu vaccine helps prevent influenza infections.

Antigen
A substance that triggers an immune response, often found on the surface of pathogens.

Example: Bacterial cell walls contain antigens that stimulate antibody production.

Related Topics

Innate Immunity
The first line of defense against pathogens, involving non-specific responses.
intermediate
Autoimmune Diseases
Conditions where the immune system mistakenly attacks the body's own cells.
advanced
Cancer Immunotherapy
Using the immune system to target and destroy cancer cells.
advanced

Key Concepts

LymphocytesAntibodiesMemory CellsVaccination