Expression of FGF-23 mRNA in bone and BM. (A-B) FGF-23 mRNA in bone tissue during G-CSF mobilization (A) (every 12 hours for 8 doses, harvested at 3 hours after each dose, n = 6) and after single-dose G-CSF (B) at the indicated hours (n = 3-5). (C-D) FGF-23 mRNA in BM cells after single-dose G-CSF (C) at the indicated hours (n = 3-5) and after single-dose isoproterenol (D) at the indicated hours (n = 3-5). Combined data of at least 3 independent experiments are shown. Data are means ± SEM. *P < .05; **P < .01; ***P < .001 (ANOVA).