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. 2015 Dec 2;5:17403. doi: 10.1038/srep17403

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This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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Hyperspectral analysis of a single valve of Coscinodiscus centralis oriented with the foramen side upwards and the direction of the incident light indicated by a white arrow (A). The wavelength regions (green and red) where transmission spectra (B,C) differing from the light source are detected. Close view of the hyper-map in A (D). Close view of the composite image in A (E). The yellow lines in (D,E) indicate the transition between the foramen and cribrum layers of the valve, with the honeycombed structure in the middle.