Tag: Immunity

Articles tagged «Immunity»

Rows of labeled blood collection tubes in a lab rack, used to check how well the immune system works

Immunity: What It Is and How the Immune System Works

What is called immunity, which organs make up the immune system, what types of immunity exist, and what disorders of the immune system occur.

Internal Medicine · November 9, 2026, 18:42

Yellow-green hazel catkins hanging from a spring branch, pollen that can trigger an allergic reaction

Allergic Reaction: What It Is and What Types There Are

Allergy is the immune system's response to substances that are harmless to most people. We explain the mechanism of sensitization, the types of allergy, the four types of reactions, and the signs that require emergency care.

Allergy & Immunology · November 9, 2026, 13:04