The immune system: Cells, tissues, function, and disease
WEBNov 22, 2023 · Summary. The immune system is the body’s tool for preventing or limiting infection. Its complex network of cells, organs, proteins, and tissues enable the immune system to...
Immune system - Wikipedia
WEBThe immune system is a network of biological systems that protects an organism from diseases. It detects and responds to a wide variety of pathogens, from viruses to parasitic worms, as well as cancer cells and objects such as wood splinters, distinguishing them from the organism's own healthy tissue. Many species have two major subsystems of ...
Immune system | Description, Function, & Facts | Britannica
WEBMay 11, 2024 · Immune system, the complex group of defense responses found in humans and other advanced vertebrates that helps repel disease-causing entities. Immunity from disease is conferred by two cooperative defense systems: innate immunity and acquired immunity. Learn more about the immune system’s mechanisms and …
Overview of the Immune System - Immune Disorders - Merck …
WEBOverview of the Immune System. video. The immune system is designed to defend the body against foreign or dangerous invaders. Such invaders include. Microorganisms (commonly called germs, such as bacteria, viruses, and fungi) Parasites (such as worms) Cancer cells. Transplanted organs and tissues.
The Immune System | Johns Hopkins Medicine
WEBThe immune system is made up of different organs, cells, and proteins that work together. There are 2 main parts of the immune system: The innate immune system. You are born with this. The adaptive immune system. You develop this when your body is exposed to microbes or chemicals released by microbes. These 2 immune systems work together. …
In brief: How does the immune system work?
WEBLast Update: June 6, 2023; Next update: 2026. The immune system has a vital role: It protects your body from harmful substances, germs and cell changes that could make you ill. It is made up of various organs, cells and proteins.
Overview of the Immune System - National Institute of Allergy …
WEBThe overall function of the immune system is to prevent or limit infection. An example of this principle is found in immune-compromised people, including those with genetic immune disorders, immune-debilitating infections like HIV, and even pregnant women, who are susceptible to a range of microbes that typically do not cause infection in ...
Immune System Function, Conditions & Disorders - Cleveland Clinic
WEBOct 20, 2023 · Your immune system works hard to keep you healthy. It does this by: Keeping invaders (like germs) out of your body. Destroying invaders. Limiting how much harm the invaders can do if they’re inside your body. Healing damage to your body. Adapting to new challenges and threats. Invaders your immune system protects you …
Overview of the Immune System - The Merck Manuals
WEBThe immune system distinguishes self from nonself and eliminates potentially harmful nonself molecules and cells from the body. The immune system also has the capacity to recognize and destroy abnormal cells that derive from host tissues. Any molecule capable of being recognized by the immune system is considered an antigen (Ag).
20.2: Introduction to the Immune System - Biology LibreTexts
WEBThe immune system is a host defense system. It comprises many biological structures —ranging from individual white blood cells to entire organs — as well as many complex biological processes. The function of the immune system is to protect the host from pathogens and other causes of disease such as tumor cells.
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