CD80 and myelodysplastic syndrome: Firstly, our data showed that the suppressive function of low-risk MDS-MSC on DCs differentiation was less than that of high-risk MDS-MSC; Secondly, compared with high-risk MDS-MSC, low-risk MDS-MSC had little effect on CD80, CD83 and CD86 expression, indicating that the effect of low-risk MDS-MSC on DCs maturation was weaker than that of high-risk MDS-MSC; Thirdly, the function of low-risk MDS-MSC on DCs endocytosis was weaker than that of high-risk MDS-MSC; Fourthly, IL-12 plays a key role in the maturation and function of DCs.