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.

Mar 11, 2025 · The immune system is the body’s tool for preventing or limiting infection. Its complex network of cells, organs, proteins, and tissues enables the immune system to defend …

Oct 31, 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 …

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.

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.

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, …

May 26, 2025 · Key Functions of the Immune System. The immune system performs several critical functions to protect the body and maintain internal balance.

It detects and responds to a wide variety of pathogens, such as viruses, bacteria, and parasites, as well as cancer cells and objects, such as wood splinters —distinguishing them from the …

At areas in contact with disease-causing organisms such as bacteria, viruses, fungi and parasites (collectively referred to as pathogens), the immune system provides ongoing active defense …

Antigens are any substances that the immune system can recognize and that can thus stimulate an immune response. If antigens are perceived as dangerous (for example, if they can cause …