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Clonal culture. Primary clone from haired skin of dog 1. (A): Clone-forming cell. Inset, clone-forming cell at higher magnification. (B): Six daughter cells of the same clone-forming cells at day 3. (C–E): Cells continued to proliferate, forming a clone consisting of thousands of cells by clonal culture day 9. (F): Growth curve of cells in clones showing exponential growth (n = 29). Abbreviation: cEPI-NCSC, canine epidermal neural crest stem cell.
