Microscopic assay of epidermal cell suspension viability. Microscopic observation of cell cultures. Melanocytes (A), Keratinocytes (B) and Fibroblasts (C) were maintained in specific commercial culture medium and routinely observed under contrast microscope. Specific morphologic analysis confirmed the presence of epidermal cells and dermal fibroblast. The capacity to seed and to proliferate demonstrated that cell suspension contained mostly viable cells. Original magnification 20×.