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The immune system is complex and pervasive. There are numerous cell types that either circulate throughout the body or reside in a particular tissue. Each cell type plays a unique role, with different ways of recognizing problems, communicating with other cells, and performing their functions.
Home Health Conditions and Diseases. The Immune System. What is the immune system? The immune system protects your child's body from outside invaders. These include germs such as bacteria, viruses, and fungi, and toxins (chemicals made by microbes). The immune system is made up of different organs, cells, and proteins that work together.
Dec 24, 2022 · The immune system is a system of biological structures and processes within an organism that protects against disease. Learning Objectives. Distinguish between innate and adaptive immunity. Key Points. Pathogens can rapidly evolve and adapt to avoid detection and neutralization by the immune system.
