Effects of Placenta-Derived Mesenchymal Stem Cells on the Particulate Matter-Induced Damages in Human Middle Ear Epithelial Cells

Figure 1

Experimental design of the present study. Human middle ear epithelial cells (HMEECs) were incubated with particulate matter (PM) for 24 hours. HMEECs were then cocultured with placenta-derived mesenchymal stem cells (PL-MSCs) for 1 and 4 days.