CD146 Antigen 1 CD146 antigen 1 Cell Differentiation 1 Child 1 Humans 1 Joint Diseases 1 Mesenchymal Stem Cells 1 Mesenchymal stromal cells 1 Osteoblasts 1 Osteogenesis 1 Osteogenic markers 1 Progressive pseudorheumatoid dysplasia arthropathy 1 bone development 1 case report 1 cell differentiation 1 child 1 genetics 1 human 1 mesenchymal stem cell 1