Fig. 7: Hindlimb unloading and X-ray radiation inhibited osteoblast differentiation and increased osteoblast apoptosis in rat femurs as evidenced by qRT-PCR analysis.
From: The combined effects of simulated microgravity and X-ray radiation on MC3T3-E1 cells and rat femurs

a, b qRT-PCR analysis of Runx2 and Caspase-3 in the four groups of rat femurs (n = 6). The data are expressed as the mean ± SD. *P < 0.05, **P < 0.01, ***P < 0.001, ns not significant.