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. 2021 Aug 26;24:100296. doi: 10.1016/j.pacs.2021.100296

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© 2021 The Author(s)

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Fig. 7 — Multi-wavelength photoacoustic analysis (MWPA) results for the human bone specimens. (a–c) PA Physio-chemical spectra (PAPCS) of the bone specimens with different BV/TV values. (d) Example MWPA curve fitting for human bone specimens with different BV/TVs. (e) Analysis of correlation between the relative collagen content as obtained via MWPA and the positive-stained area metric for the collagen content extracted from the histological images. (f) Analysis of the correlation between BV/TV and the positive-stained areas in the histological images.