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

    Your immune system is your body’s first-line defense against invaders like germs. It helps protect you from getting sick and promotes healing when you’re unwell or injured.

  2. What is Immunity? – Vaccine Practice for Health Professionals: …

    Immunity refers to the body’s ability to prevent the invasion of pathogens. Pathogens are foreign disease-causing substances, such as bacteria and viruses, and people are exposed to them …

  3. Immunity - Definition, Types and Vaccination - GeeksforGeeks

    Jul 23, 2025 · Immunity is a defense mechanism of the body that is provided by the immune system and helps in fighting disease-causing organisms. There are two immunity types: innate …

  4. Immunity Types | Vaccines & Immunizations | CDC

    Jul 30, 2024 · There are two types of immunity: active and passive. Immunity to a disease is achieved through the presence of antibodies to that disease in a person's system. Antibodies …

  5. Immunity (medicine) - Wikipedia

    In biology, immunity is the state of being insusceptible or resistant to a noxious agent or process, especially a pathogen or infectious disease. Immunity may occur naturally or be produced by …

  6. What is Immunity? Definition, Types, Example, Know A-Z

    To combat these antigens, the body employs a protective mechanism called the immune system, and this process is known as immunity. In simpler terms, immunity is how the body fights and …

  7. What is Immunity? A Detailed Explanation - BNS Institute

    May 25, 2024 · Immunity is the body’s remarkable defense system that recognizes, attacks, and eliminates harmful foreign substances. This sophisticated network of cells, tissues, and organs …

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

    Apr 13, 2025 · What Is the Immune System? The immune system is a vast, interconnected network of organs, cells, and molecules that protects your body from harmful substances, …

  9. Immune system | Description, Function, Innate Immunity, …

    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 …

  10. IMMUNITY Definition & Meaning - Merriam-Webster

    The immune system is what protects your body from diseases and infections. It's the bodily system that produces the immune response to defend your body from foreign substances, …