Although DNA can survive only up to 100,000 years and is rarely found in useful quantities in specimens even half that old, the team has found measurable amounts of osteocalcin in 120,000 - year - old bones. (sciencemag.org)
However, our observation that WBV increases serum osteocalcin in db / db mice is consistent with the findings of Jing et al. (44). (academic.oup.com)
This increased osteocalcin formation significantly improved bone mineral density (3). (drjockers.com)