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. 2022 Dec 5;12:21038. doi: 10.1038/s41598-022-25013-8

Figure 1.

Figure 1

(a) Visible color photograph of The Apostles Philip, Andrew, Mattias and Thomas (c.1410-25). (b) THz mapping of delamination on the painting before (red) and after (blue) the consolidation effort. Delamination is denoted by dense groups of markers. Enclosed in white boxes are the five regions of interest that were selected for further analysis.