pathosis
1. Conclusion MDS(especially RA)is difficult to diagnose,which should be diagnosed according to pathosis hemogensis.
三系均不同程度表现病态造血特征,并有向白血病转化的趋势。
2. Keywords Treponema denticola;Periadicular pathosis;Polymerase chain reaction(PCR);
齿垢密螺旋体;慢性根尖周炎;聚合酶链反应;