Keywords allogeneic hematopoietic stem cell transplantation;chimerism;single nucleotide polymorphism;real-time PCR;phosphorothioate modified;allele specific amplification;

• 异基因造血干细胞移植;嵌合体;单核苷酸多态性;实时荧光PCR;硫代化修饰;等位基因特异性扩增;