Morphology of adherent cells cultured for 14 days in liquid cultures in the presence of stem cell growth factor and vascular endothelial growth factor.

All photographs are taken from the same experiment. (A) shows an area with predominant small-sized round cells and flat elongated cells, (B) cluster formation, (C) large-sized round cells with cytoplasmic granules, and (D) area with exclusively small-sized round cells. Original magnification ×100.