The feces were collected from the patients who had been successfully transplanted after bone marrow transplantation. After 24 hours of culture in the culture medium, the degradation rate of FODMAPs was detected, and the relationship between the degradation rate and the occurrence time and degree of GVHD was observed
With the stem cell transplanting increasing, patients which effected with GVHD were also increased. To evaluation the relationship between FODMAPs and GVHD, Bone marrow transplant patients were recruited.