Research Article

The Manufacture of GMP-Grade Bone Marrow Stromal Cells with Validated In Vivo Bone-Forming Potential in an Orthopedic Clinical Center in Brazil

Figure 4

Osteogenic potential of BMSCs in vivo. In vivo transplantation assays were performed by combining BMSCs with HA/TCP followed by subcutaneous transplantation into immunocompromised mice. (a, b) H&E staining. (a) Negative control (HA/TCP transplantation without BMSC). (b) BMSCs formed ectopic ossicles that were sometimes populated by host hematopoietic marrow (asterisk). The arrowheads indicate osteocytes. HA = hydroxyapatite/tricalcium phosphate particles. (c–f) The human origin of the woven bone by immunohistochemical analysis. (c, e) Positive control of lamin A/C and collagen I stains, respectively, in human skin. (d, f) Expression of human lamin A/C and collagen I within the woven bone (for the immunohistochemistry analysis, ).
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