Word parts
What it means
The study of how the body defends itself against germs and other foreign substances, and of what happens when that defense goes wrong. It covers allergies, autoimmune diseases such as lupus, immune deficiencies, vaccines and transplant rejection. A clinical immunologist often also treats allergies.
At a glance
| Spanish | inmunología |
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Related terms
vaccine
A product that trains the immune system to protect the body against a specific disease.
allergy
A reaction of the immune system to a substance that is harmless to most people.
-logy
A word ending that means the study of something.
immune system
The body's defense system of cells, tissues and organs that fights germs and other foreign substances.
immun/o
A word root that means immune, or protection from disease.