Fig. 4From: A novel approach to label bone marrow-derived mesenchymal stem cells with mixed-surface PAMAM dendrimersTri-lineage differentiation of BM-MSCs following D-Cy5.5 uptake. (a) MSCs differentiated to become adipocytes were stained with Oil Red O and showed positive red lipid droplets and blue nucleus for MSCs transfected with Cy5.5 G4-90/10 dendrimer. (b) MSCs differentiated to become osteoblast were stained with Alizarin Red and showed positive orange red extracellular calcium deposits for MSCs transfected with D-Cy5.5 and (c) MSCs differentiated into chondrocytes were stained with Alcian Blue and showed positive blue-colored sulfonated mucosubstance following transfection with D-Cy5.5. Scale bar 20 μmBack to article page