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. 2020 Oct 5;145(3):237–258. doi: 10.1007/s11120-020-00782-3

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© The Author(s) 2020

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 20 — Membranograms reconstructed from cryo-ET images of PSII-rich stacked grana (blue) and PSI-rich non-stacked stroma thylakoids (yellow) of Chlamydomonas. All membranograms illustrate densities located 2 nm above the membrane surface. The stroma-side membrane surfaces are labeled St, and the luminal-side surfaces are labeled Lu. A sharp grana-to-stroma membrane transition (arrowhead) is evident in all membranograms. The large, dimeric PSII complexes are limited to the grana membrane domains, whereas the smaller PSI particles are limited to stroma membranes. From Wietrzynski et al. (2020)