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In vivo tracing of positive immune-reacted human adipose-derived mesenchymal stem cells (hAdMSCs)against human osteocalcin (panel A) and BrdU (panel B) in tissue sections of group IV (defective sites + platelet-rich plasma (PRP)+ hydroxy-apatite/tricalcium-phosphate (HA/TCP) scaffold + hAdMSCs) after 8 weeks (indicated by black arrows). Panel C indicates control slide to validate there is no specific binding of antibodies; scale bar in all photos = 50 µm
