Raman microspectroscopy results. (A) Crystallinity (inverse full width at half height of 960 cm−1 peak), mineral-to-matrix ratio, and carbonate-to-phosphate ratio for intact tibiae and fracture callus at 3 weeks of healing. (B) Crystallinity vs. mineral-to-matrix ratio in both genotypes. In (C), histograms for spectra taken at the surface (bottom) appear to be a reasonable sampling of spectra taken through the cortical thickness (top). Notations indicate significance with respect to genotype (*, p < 0.05). No significant differences were found by genotype (m, p = 0.076 and n, p = 0.075) or between treatment groups.