Figure 4From: Spinning around or stagnation - what do osteoblasts and chondroblasts really like? Osteotgenic differentiation: no specific antigen detectable (-), < 10% positive adherent cells (+), 10-59% positive adherent cells (++), 60-100% positive adherent cels (+++); AP: alkaline phosphatase; Rankl: Receptor Activator of NF-_B Ligand; CD34: hematopoietic antigen CD34; CD105: mesenchymal marker CD105.Back to article page