Antigen, 4B4

Integrin beta-1 chains which are expressed as heterodimers that are noncovalently associated with specific alpha-chains of the CD49 Family (CD49a-f). CD29 is expressed on resting and activated Leukocytes and is a marker for all of the very late activation Antigens on Cells. (from: Barclay et al., The Leukocyte Antigen FactsBook, 1993, p164)