antigens
Foreign substances would suffice as well as contaminants, toxins, etc.
Antigens is the term for molecules that are foreign to the body.
To rid your body of foreign substances in your nose,
Immune system
antibodies
Substances foreign to the body are typically called antigens. These can include viruses, bacteria, toxins, and other microorganisms that are not naturally present in the body. When the immune system detects these foreign substances, it mounts a response to eliminate them and protect the body from potential harm.
The body's defense system is the immune system.
T-cellls
no
immunology
The Immune System is the defense network of the body. The immune system works with specific receptors on specialized cells - detecting foreign bodies and signaling for the immune system to destroy them.
Antigens Antibodies neutralize these molecules.