Fig. 3From: Metabolomics and physiological analysis of the effect of calcium supplements on reducing bone loss in ovariectomized rats by increasing estradiol levelsEffect of CaCO3 on BTMs. Serum levels of the BTMs PINP (A), OC (B), NTX (C), and CTX (D) in all groups were analyzed with ELISAs, n = 12. a: p < 0.05 compared with the SHAM-LC group. b: p < 0.05 compared with the OVX-LC groupBack to article page