Fig. 4

Histological examination of subcutaneous implanted SGE hydrogels using H&E staining reveals low immunogenic potential of all samples. Day 30 samples E–H contained scattered to diffuse low density infiltrates of macrophages, and lymphocytes in a thin band of fibrosis (*) surround the implant. By day 90 (I-L), there is little evidence of inflammation due to lack of granulocyte invasion in the surrounding tissue