Figure 2From: Sphingosine-1-phosphate promotes the differentiation of human umbilical cord mesenchymal stem cells into cardiomyocytes under the designated culturing conditionsImmunostaining of anti-α-actinin and anti-α MHC in cells at different time points of culturing. A strong expression of both α-actinin and MHC proteins (A, B, D, E, G, H, J, K) was observed in CMCM and CMCM+S1P groups, but not in cells from the DMEM+S1P group(C, F, I, L).Back to article page