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Structural outcome in aged mice. (A), H&E (left) and safranin-O (right) staining of sections from injured joints of 8-month-old C57BL/6 and DBA/1 mice 8 weeks after surgery. The lower panel shows higher magnification of the areas squared in the upper panel. (B), Modified Mankin score at 8 weeks time points (n = 15). All the values are expressed as mean ± standard error of the mean (s.e.m.).
