Figure 4From: Immortalization of human adipose-derived stromal cells: production of cell lines with high growth rate, mesenchymal marker expression and capability to secrete high levels of angiogenic factorsβ-galactosidase (β-gal) senescence evaluation of hASC-M, −T, −TS and -TE cells. Representative β-gal staining of cells. The percentage of senescent cells were calculated by analyzing eight different fields for each cell line. The histogram represents the mean value ± SD of four different experiments **P <0.01 vs hASCs-M. Magnification 10X.Back to article page