Chronological Age Estimation of Male Occipital Bone Based on FTIR and Raman Microspectroscopy

Figure 3

The PCA results of FTIR and Raman. (a) FTIR PCA score plot for 6 age stages. (b) Raman PCA score plot for 6 age stages. (c) FTIR PCA score plot for 3 structures (lamina externa, diploe, and lamina interna). (d) Raman PCA score plot for 3 structures (lamina externa, diploe, and lamina interna). (e) FTIR PC1 and PC2 loading plot. (f) Raman PC1 and PC2 loading plot.

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