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  1. Immune System Function, Conditions & Disorders - Cleveland Clinic

    Your immune system is a network of organs, white blood cells, proteins and chemicals that work together to protect you from invaders (like germs) that can harm you.

  2. Immune system - Wikipedia

    Immune system ... 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, such as viruses, bacteria, and …

  3. The immune system: Cells, tissues, function, and disease

    Mar 11, 2025 · The immune system defends the body from invaders such as viruses, bacteria, and foreign bodies. Find out how it works, what can go wrong, and how to boost immune health.

  4. Immune system | Description, Function, Innate Immunity, Adaptive ...

    Nov 29, 2025 · The immune system is a group of defense responses found in humans and other advanced vertebrates that helps repel disease-causing entities. Immunity from disease is conferred …

  5. The Immune System - Johns Hopkins Medicine

    The immune system works to keep germs and other foreign substances out of the body and destroy any that get in. It's made up of a complicated network of cells and organs.

  6. What is the Immune System? How Your Body’s Defense Works to …

    Apr 13, 2025 · The immune system is a vast, interconnected network of organs, cells, and molecules that protects your body from harmful substances, pathogens (like bacteria, viruses, and fungi), and …

  7. What Is The Immune System - Immunology Explained

    The immune system is the body’s defense mechanism to keep you healthy. It is a complex network of cells, tissues, and organs that work together to identify and eliminate pathogens.

  8. What Is the Immune System? - National Institute of General Medical …

    Dec 11, 2023 · The immune system is a trained army of cells, tissues, and organs that work together to block, detect, and eliminate harmful insults to your body. It can protect you from invaders like …

  9. Overview of the Immune System - MSD Manuals

    What does the immune system do? Your immune system fights infections and diseases. This is called an immune response. Your immune system needs to: To do its job, your immune system needs to be …

  10. Immune System: Your Body’s Defense - WebMD

    Feb 3, 2025 · Your immune system defends your body against harmful invaders like viruses and bacteria, using white blood cells, antibodies, and other defenses to maintain health.