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. 2015 Aug 6;6(9):3276–3286. doi: 10.1364/BOE.6.003276

Fig. 2.

Fig. 2

The spectra of different tissue types in 1.7µm spectral range. (a) The normalized PA spectra of different lipid samples. (b) The spectra of elastin, collagen water, and calcium obtained from refs [25–27, 29]. All spectra are normalized to their respective maxima.