Fig. 6. The puromycin-selected population contains smooth muscle cells. (A)
TGF-ß1 and laminin-1 increase the number of
-SMA+
cells. Puromycin-selected cells were cultured on either gelatin or laminin-1,
in the presence of 10 ng/ml rVEGF or 5 ng/ml TGF-ß1, and stained for
-smooth muscle actin (FITC, actin filaments in green) and CD31 (red).
The diffuse green staining reveals the expression of EGFP in CD31+
cells that do not contain
-SMA. Bar, 50 µM. (B) CD31/
-SMA
double staining. While some cells only expressed
-SMA (arrows), others
expressed both
-SMA and CD31 (arrowheads). Bar, 30 µM.