Dual Origin of Intimal Cells in Cardiac-Allograft Arteriosclerosis

Abstract
The origin of the cells present in the arterial intimal thickening in a human cardiac allograft surviving for two years was determined by fluorescent antiserums directed against the donor and host HL-A antigens. The majority of the cells in the thickened intima were of donor tissue type, but in one vessel an appreciable number of cells from the host were identified in the thickened arterial intima.