The Immune System 101

This paper explains how the innate and adaptive immune systems work together to protect the body from disease. It examines key immune defenses, including physical barriers, immune cells, inflammation, antibodies, and B and T lymphocytes, and uses influenza A infection to illustrate how these systems coordinate to detect and eliminate pathogens. Overall, the paper highlights the integrated role of the immune and lymphatic systems in maintaining health and providing long-term immunity.