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Guard cells

   Also found in: Medical, Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
(Bot.) the bordering cells of stomates; they are crescent-shaped and contain chlorophyll.

See also: Guard



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In berry research particularly, anthocyanins have been shown to possess strong antioxidant qualities that guard cells of the fruit pulp and seeds from reactive oxygen species ("free radicals") formed during normal plant metabolism and exposure to ultraviolet light.
They are also now under investigation for their unique ability to stop LDL cholesterol, reduce blood clotting, and even guard cells against harmful carcinogens.
The stoma is an oval hole protected by two guard cells.
 
 
 
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