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NCI Dictionary of Cancer Terms

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NCI Dictionary of Cancer Terms



pyrimidine  listen  (py-RIH-mih-deen)

  One of two chemical compounds that cells use to make the building blocks of DNA and RNA. Examples of pyrimidines are cytosine, thymine, and uracil. Cytosine and thymine are used to make DNA and cytosine and uracil are used to make RNA.