CD34 and myelodysplastic syndrome: Wei et al. (69) profiled the mRNA expression of eight TLRs (TLR1-4 and TLR6-9) in a cohort of 149 patients with MDS, and found increased expression of TLR2 and its binding partners, TLR1 and TLR6, in the CD34+ cells of these patients compared to healthy controls.