Popis: |
In order to determine the detection limit of the minor component in recipient after bone marrow transplantations, analysis of different STR polymorphisms (ACTBP2, D11S554, D17S906, D7S1517, PentaE, D12S391) were performed. White blood cells from four voluntaries were isolated and visually counted by microscopy (Burcher) and diluted (100000cells/ml). Mixtures were made (% recipient: 0.6, 1.25, 1.5, 2.5, 5 and 25) prior to DNA extraction by chelex. The results show that the detection limit is between 0.5 and 1% for the minor component when using selected STRs for monitoring chimerisme. |