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. Author manuscript; available in PMC: 2012 Oct 22.
Published in final edited form as: J Orthop Res. 2010 Dec;28(12):1600–1607. doi: 10.1002/jor.21153

Figure 1.

Figure 1

Intervertebral disc height of aged and young wild-type, and progeroid ERCC1-deficient mice. (A) The percent disc height was calculated as the ratio of the average of disc height to sum of the length of the vertebrae and disc height, to correct for differences in spine length due to the various size of the different animals. (B) Radiographs of the lumbar vertebra of a 3-week-old wild-type mouse (top), its Ercc1−/− littermate (middle), and a 2-year-old wild-type mouse (bottom). (C) The percent of lumbar disc heights as determined from measurements made from X-ray (top) or micro-CT (bottom). Data reported were average ± standard error of three discs from at least three mice per group (micro-CT).