Femoral and body weight data from the C168–176 congenic subline of mice and Darc-KO mice. Data are expressed as a percentage of B6 and are mean ± SEM. (a) P < 0.01, (b) P = 0.01, (c) P = 0.05 as measured by Student’s t-test, with n = 10–14. (B.WEIGHT) Body weight, (LENGTH) femur length, (TRAB.VOL) total femur trabecular volume, (TOT.vBMD) total volumetric bone mineral density, (PERI.CIR) periosteal circumference, (ENDO.CIR) endosteal circumference.