Definition(s)
- In cancer, refers to how mature (developed) the cancer cells are in a tumor. Differentiated tumor cells resemble normal cells and tend to grow and spread at a slower rate than undifferentiated or poorly differentiated tumor cells, which lack the structure and function of normal cells and grow uncontrollably.
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Definition from: Physician Data Query via Unified Medical Language System
at the National Library of Medicine
See also Understanding Medical Terminology.