Immune

Immune system is a complex network of cells, tissues, and organs that work together to defend the body against harmful invaders such as bacteria, viruses, and disease. It is an essential part of the body's defense mechanism and plays a crucial role in maintaining overall health.

Overview

The immune system is composed of two main parts: the innate immune system, which you are born with, and the adaptive immune system, which you develop when your body is exposed to microbes or chemicals released by microbes. These two immune systems work together to protect the body.

Innate Immune System

The innate immune system is the body's first line of defense against infection. It includes physical barriers like the skin and mucous membranes, as well as cells and proteins that are always ready to defend the body against infection. The innate immune system is non-specific, meaning it doesn't target specific pathogens.

Adaptive Immune System

The adaptive immune system, on the other hand, is able to recognize and remember specific pathogens to provide long-lasting immunity. It includes T cells and B cells, which are types of white blood cells that can recognize specific antigens and produce antibodies to fight them.

Immune Response

When the body is exposed to a pathogen, the immune system mounts an immune response. This involves a series of steps, including the recognition of the pathogen, the activation of immune cells, the production of antibodies, and the elimination of the pathogen.

Disorders of the Immune System

Disorders of the immune system can lead to illness and infection. These include autoimmune diseases, in which the immune system attacks the body's own cells, and immunodeficiency disorders, in which the immune system is not able to mount an effective immune response.

See Also

• Inflammation
• Vaccination
• Immunology

References

Immune Resources
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