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(A) Scheme and characteristics of interspersion of alginate nanobeads into fibrin hydrogel for soft tissue engineering and (B) Stained mesenchymal stem cells (red): with alginate nanobeads alone at 6 h (a) and 48 h (d), into fibrin composite with alginate nanobeads at 6 h (b) and 48 h (e), and into fibrin network at 6 h (c) and 48 h (f). Scale bar: 5 μm. Reprinted from Deepthi et al. 228
