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Oct 20, 2023 · Your immune system is a large network of organs, white blood cells, proteins and chemicals. These parts all work together to protect you from germs and other invaders. Your immune system also helps your body heal from infections and injuries.
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 prior exposure or immunization . Innate and adaptive. Scheme of a Fc receptor. The immune system has innate and adaptive components.
May 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 evolution.
Jun 6, 2023 · 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. As long as your immune system is running smoothly, you don’t notice that it’s there.
The immune system responds to antigens by producing cells that directly attack the pathogen, or by producing special proteins called antibodies. Antibodies attach to an antigen and attract cells that will engulf and destroy the pathogen. The main cells of the immune system are lymphocytes known as B cells and T cells.
Unlike the innate immune system, which attacks only based on the identification of general threats, the adaptive immunity is activated by exposure to pathogens, and uses an immunological memory to learn about the threat and enhance the immune response accordingly.
Sep 26, 2022 · The Immune response is the body's ability to stay safe by affording protection against harmful agents and involves lines of defense against most microbes as well as specialized and highly specific response to a particular offender. This immune response classifies as either innate which is non-specific and adaptive acquired which is highly specific.
