Fig. 7. Degrees of lung injury were assessed by formation of hyaline membrane and hemorrhage in the lung parenchyma of rabbits after transplantation with placebo (control, A ) or autologous endothelial progenitor cells (EPCs, B ). Areas of hyaline membrane and hemorrhage were measured using TwinCAD software (TCAM Development, Taipei, Taiwan). Data were analyzed by unpaired t test and are presented as mean ± SEM. * P < 0.05. n = 4 animals in each group.