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. 2017 Oct 13;7:13138. doi: 10.1038/s41598-017-13744-y

Figure 4.

Figure 4

Cell metabolic activity on rat cardiomyoblasts H9C2 treated with control polymers and hollow spheres. (A) Linear dithiolPEG, linear PEG2000 after 24 hours of exposure and (B) the dithiolPEG chemical structure; alamarBlue® assay was carried out on the dithiolPEG (orange), PEG2000 (blue), and untreated cells (green) (n=3, p<0.05). Cell metabolic activity on the collagen-dithiolPEG hollow spheres (C) and collagen-4armPEG hollow spheres (D) (n=3, p<0.05). Polystyrene (green) and untreated cells (orange) were used as controls