Figure 2. Morphological properties of cells derived from the epidermis are distinct from cells derived from the dermis. A: After about 3 to 4 days in culture, cells derived from the epidermis expand in a mosaic way, self renewing cells appeared on the surface of the cell layer (red arrow). B: Shows fibroblast cells derived from the dermis. C: After about 8 to 10 days, stem-like cell clones formed on the surface of the epithelial cell layer (red arrow). D: After 8~10 days fibroblasts derived from the dermis became confluent and stem-like cell clones were not observed.