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(a) Wound-healing assay demonstrated that MSCs and MSCs-EP2 migration was markedly reduced in the presence of ERK1/2 inhibitor PD98059. (b) Transwell assay revealed that the number of ERK1/2 inhibitor PD98059 treated MSCs and MSCs-EP2 traversing the membrane was significantly less than the untreated control when incubated with PGE2, ∗P < 0.05.
