Fig. 2
From: Factors influencing the bone mineral density in Duroc boars
Effect of age on bone quality in boars. A Effects of age on BMD. B Quadratic relationship for age and BMD in Duroc boars. Each black point represents a sample. C Effects of age on serum OCN, CTX-I, PIICP and CTX-II levels. Values were expressed as mean ± SEM. A, B peer data show significant differences without the same letter (P < 0.05)