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Growth of astrocytes in fibrin hydrogels: (A) immnuostaining of astrocytes with anti-GFAP antibody; (B) nuclei of astrocytes are labeled with DAPI; (C) merging of images (A) and (B); (D)–(F) growth of astrocytes in fibrin hydrogels; (D) fibrin hydrogel without aprotinin; (E) fibrin hydrogel with aprotinin (10 μg/ml); (F) fibrin hydrogel with aprotinin (40 μg/ml); (G)–(I) magnified images of cells indicated by arrows in (D)–(F), respectively. Scale bar: 100 μm
