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Definition of Antigen-presenting cell

Antigen-presenting cell: A cell that can "present" antigen in a form that T cells can recognize it. The cells that can "present" antigen include B cells and cells of the monocyte lineage (including macrophages).

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=10098
Last Editorial Review: 6/14/2012

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