NCI Dictionary of Cancer Terms

The NCI Dictionary of Cancer Terms features 8,305 terms related to cancer and medicine.

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microenvironment
(MY-kroh-en-VY-run-ment)
In biology, the cells, molecules, and structures (such as blood vessels) that surround and support other cells and tissues. Abnormal cells, such as cancer cells, can change their microenvironment. Changes in the microenvironment can affect how cancer cells grow and spread. Studying the microenvironment may help researchers understand how cancer cells form and find new ways to treat cancer.