NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,855 terms related to cancer and medicine.
Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.
- quadrivalent vaccine
- listen (KWAH-drih-VAY-lent vak-SEEN)
- A vaccine that works by stimulating an immune response against four different antigens, such as four different viruses or other microorganisms. For example, Gardasil is a quadrivalent vaccine that helps protect the body against infection with four different types of human papillomaviruses (HPV).