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Histological analysis after Masson–Goldner staining of PLGA (first column), PLGA/coll (second column), and PLGA/HAp (third column) scaffolds at the implantation site after 1 week (first panel), 4 weeks (second panel), 12 weeks (third panel), and 26 weeks (fourth panel) post-implantation; s—scaffold, star (*)—tissue ingrowth. The pictures were taken in the central part of the defect filled with the scaffold.
