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Immune System - Medical Science

Q1:

What is the behavior in which T cells and B cells constantly travel throughout the body seeking out and destroying foreign substances?

A Antibody-mediated immune response

B Immune surveillance

C Cell-mediated immune response

D Vaccination

ANS:B - Immune surveillance

Immune surveillance is a theory that the immune system patrols the body not only to recognize and destroy invading pathogens but also host cells that become cancerous. Perhaps potential cancer cells arise frequently throughout life, but the immune system usually destroys them as fast as they appear.