NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,018 terms related to cancer and medicine.
- S-phase fraction
- listen (... fayz FRAK-shun)
- A measure of the percentage of cells in a tumor that are in the phase of the cell cycle during which DNA is synthesized. The S-phase fraction may be used with the proliferative index to give a more complete understanding of how fast a tumor is growing.