The effect of TPF on LPS‐induced osteoclast‐specific transcription factors. (A, B) c‐Fos protein synthesis, (C) expression of c‐Fos gene, (D, E) NFATc1 protein synthesis, (F) expression of NFATc1 gene, (G, H) Ap‐1 protein synthesis and (I) expression of AP‐1 gene. The data were represented as mean ± SD (n = 5) of 5 independent experiments. * P