ZA treatment increased CD34+CD133+VEGFR2+ EPCs significantly in the BM (A) but not in PB (B). Acute PTH increased EPCs in the BM of the VC- treated but not in ZA-treated mice (A). In the VC-treated mice, acute PTH had no effect on γδT-cells in the BM (C) but significantly suppressed in PB (D). However, in ZA-treated mice no effects were observed in both VC- and ZA-treated mice. n=10/group, *P < 0.05, **P < 0.01, ***P < 0.001