Figure 2From: Transplantation of endothelial progenitor cells in treating rats with IgA nephropathy The morphological changes of cultured endothelial progenitor cells (EPCs). All images were taken under light microscope. Day-1, cells were small-round-shaped; Day-3, cells enlarged; Day-7, cells were short spindle sharped; Day-14, cells became slender-spindle-shaped and number of cells increased; Day-21, cells grew with a “cobblestone” appearance.Back to article page