Figure 3: Expression of standard MSC markers in CD54- and CD54+ AMSC populations. Semi-quantitative PCR was performed using primers specific for CD73, CD90 and CD105. Fifteen μL of each PCR product was detected by ethidium bromide gel electrophoresis using a 1% agarose gel. The relative expression level was taken as a ratio over the expression of the house keeping gene β-actin.