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Diagrams show expression of (a) CD11a, (b) CD14 and (c) CD54 by U937 cells. RT-PCR performed for assessment of markers expression. (1) U937 cells+UCB-MSCs, (2) cells in C.M, (3) U937 cells+100 μM CoCl2, (4) U937 cells+UCB-MSCs+100 μM CoCl2, (5) U937 cells in C.M+100 μM CoCl2. ns, non-significant. (*P<0.05, by using student’s t-test).
