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S phase

noun, Cell Biology
1.
the period of the cell cycle prior to mitosis, during which the chromosomes are replicated.
Origin
1940-1945
1940-45
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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S phase in Medicine

S phase n.
The phase of the mitotic cycle during which DNA synthesis occurs.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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