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. 2019 Jul 11;14(7):e0219616. doi: 10.1371/journal.pone.0219616

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© 2019 Kugler, Dong

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 5 — Transmitted light image of cells. (A) Completely photo-bleached cells under 1.45 mm thick muscovite with no remaining chlorophyll a and carotenoids after 24 hr UVB exposure. The blue color is from phycocyanin. (B) Photo-bleached cells (mostly orange coloration) under 1.67 mm thick phlogopite with carotenoids mostly remaining after 24 hr UVB exposure. (C) Slightly photo-bleached cells (green-blue with some orange color) under 1.53 mm thick biotite with most chlorophyll a and carotenoids still remaining after 24 hr UVB exposure. (D) Healthy cells without any UVB exposure showing green color. Scale bar is 50 microns.