这也意味着那些需要输血的病人，如癌症和白血病患者，可以获得极为匹配、无任何感染风险的血液。
It also means that patients needing transfusions - such as those with cancer and leukaemia - could be given perfectly matched blood, with no risk of infection.
其中一些患者很年轻，原本身体很好，并无任何已知的风险因素。
Some of these patients are young and healthy with no known risk factors.
在这些患者中的遗传分析HLA - DR或NOS2A基因座无差异，亦无任何临床可确定的高危风险。
Genetic analysis showed no difference in HLA-DR or NOS2A loci between these patients and other MS populations, nor were there any clinical factors that identified high risk.
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