Biomedical Engineering Reference
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Fig. 5. Microscopic investigation of cytocompatibility of PEG-based hydrogels. L929
fibroblasts were cultured on smooth, bulk PEG samples that were fabricated with different
percentages (w/v) of photoinitiator (PI) and crosslinking agent (CL); resulting in different
mechanical properties. Cell morphology was monitored by light microscopy at different
time points (24 h and 48 h) after initial cell seeding. Electron microscopy images (FESEM) of
cells which were fixed and dried after 48 h are shown in the bottom row.
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