| 1. | Observe gvhd for 60 days . the results showed that mouse lymphoid cells were present in the sd rats detected by fluorescence activated cell sorter ( facs ) for morn than 90 days . the chimeric rates were 18 % - 45 % , 7 % - 23 % , 2 % - 8 % on day 30 , 60 , 90 respectively 随着时间的推移,嵌合率逐渐下降。骨髓移植后60天及90天的嵌合率分别为7 - 23 , 2 8 。 |