Figure 3

Scanning electron microscopy of human mesenchymal stem cells. A comparison of cell morphology of three different groups and a control at (a) 0 days, (b) 3 days and (c) 7 days after heating, indicating an increase in cell density over time for the control, 38°C and 48°C groups. Cells heated to 58°C rapidly died with signs of cell swelling and breakdown at day 3 (b), leaving cell debris by day 7 (c).