Fig. 1

Spheroid formation and cell viability of adipose-derived stem cells. (a) Spheroids of adipose-derived stem cells (ADSC) were successfully formed in silicone elastomer-based concave microwells after one day of culture. (b) The assay showed high initial viability. By day 7, an increase in dead cells (red) became more apparent, particularly in the ADSC-single cell group, suggesting a higher survival rate in the spheroid configuration over time.