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 …

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 …

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 …

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.

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, …

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.

The overall function of the immune system is to prevent or limit infection. All immune cells come from precursors in the bone marrow and develop into mature cells through a series of changes …

Oct 18, 2022 · The role of the immune system — a collection of structures and processes within the body — is to protect against disease or other potentially damaging foreign bodies.

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