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Definition of Sperm stem cell

Sperm stem cell: A cell that is incapable of fertilizing an egg cell but can give rise to cells that develop into sperm. Sperm stem cells can be grown in laboratory culture, providing a ready source of these cells, as was first demonstrated in mice. Also called a spermatogonial stem cell.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=40278
Last Editorial Review: 6/14/2012

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