Which system is the body's network of activities and cells that identify and destroy antigens and cancer cells?

A) Immune system
B) Autonomic nervous system
C) Sympathetic nervous system
D) Cardiovascular system

Psychoneuroimmunology

The study of the connections among stress, the body’s immune system, and illness.

Immune System

A complex network of cells, tissues, and organs that work together to defend the body against attacks by foreign invaders, such as bacteria, viruses, parasites, and fungi.

Antigens

Molecules or substances that the immune system identifies as foreign, triggering an immune response.