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The 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 ...
30 wrz 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.
22 lis 2023 · The immune system is the body’s tool for preventing or limiting infection. It consists of cells, organs, proteins, and tissues that can distinguish healthy from unhealthy tissue and mount an immune response against pathogens.
Learn how the immune system defends the body against foreign or dangerous invaders, such as microorganisms, parasites, and cancer cells. Find out the components, lines of defense, and disorders of the immune system.
The 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.
Learn how the immune system protects your child's body from outside invaders, such as germs and toxins. Find out the difference between the innate and adaptive immune systems, and the organs, cells, and proteins that make them work.
Learn how the immune system distinguishes self from nonself and eliminates potentially harmful nonself molecules and cells from the body. Explore the components, functions, and regulation of innate and acquired immunity, as well as the immune response to antigens.
