Figure 5. Effects RA on human osteoclast gene expression.

Human CD14⁺ cells were treated on bone slices (A, C, E, G) or plastic (B, D, F, H) as described in Figure 4. mRNA levels were measured using real-time PCR and were normalized relative to the expression of β-actin. * P<0.05, ** P<0.01, *** P<0.001.