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Definition of Regulatory T cell

Regulatory T cell: A T cell (T lymphocyte) that regulates the activity of another T cell, usually by suppressing its activity. This process can be beneficial or harmful. There are several different types of regulatory T cells.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=31085
Last Editorial Review: 6/14/2012

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