6 天之前 · 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 by two …

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 …

You’ve heard of your immune system, but how does it work? Learn more about the cells and organs that protect your body and help it heal.

Innate immunity involves immediate, nonspecific responses to foreign invaders, while adaptive immunity requires more time to develop its complex, specific responses (1). Innate immunity is the first line of …

What is the immune system? 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 …

Active and passive immunity keep us from becoming sick. Both are discussed in details, as well community immunity. Have you ever thought about how immunity works? If so, you might have …

2025年3月11日 · Its complex network of cells, organs, proteins, and tissues enables the immune system to defend the body from pathogens. A fully functional immune system can distinguish healthy tissue …

Developed by the American Association of Immunologists and their expert members, Immunology Explained connects immunology to overall health, helping people understand its link to common …

2025年8月26日 · Learn about immunity: your body's defense system against bacteria, viruses, and disease. Understand innate, adaptive, active, and passive immunity.

2024年7月30日 · 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 are …