Delayed addition of BMSCs inhibits T-lymphocyte proliferation induced by DCs or PHA.

T cells were cultured for 7 days before adding BMSCs (1:1 ratio). T cells proliferated without BMSCs (white bars) or were inhibited in the presence of BMSCs (black bars). The data are expressed as mean ± SD of triplicates of 6 separate experiments. *Statistically significant when compared with MLRs performed in the presence of BMSCs (Studentt test for paired data).