The Triangle of Immune Defense

Innate, Adaptive, and Passive

The triangle of Innate, Adaptive, and Passive represents the three primary components of the immune system, which work together to protect the body from infection and maintain health. Each plays a distinct role in safeguarding against threats.

1. Innate: The innate immune system is the body’s first line of defense. It includes physical barriers (like skin), chemical barriers (like stomach acid), and immune cells that respond quickly and nonspecifically to invading pathogens. It acts as the immediate and generalized protector.

2. Adaptive: The adaptive immune system is more specialized and develops over time. It learns to recognize specific pathogens and creates memory cells, providing long-term immunity. This system is highly targeted, responding precisely to threats encountered before.

3. Passive: Passive immunity is temporary protection gained from external sources, such as antibodies passed from mother to child or through immunizations. It supplements innate and adaptive immunity when needed.

   
   

Balancing innate, adaptive, and passive ensures comprehensive immune protection.