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. 2020 Dec 8;117(51):32722–32730. doi: 10.1073/pnas.2005460117

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Fig. 3. — TEM of semithin sections (A–C) and energy-dispersive X-ray spectroscopy (EDX) (D–F) analysis of A. carterae 6 h after refeeding N-starved cultures with guanine. Typical EDX point spectra of guanine crystals (D–F) indicating a high N content were obtained in the scanning TEM (STEM) mode from semithin cell sections. Arrows point to guanine particles outside (A) and inside cells (B and C). (Scale bars, 1 μm.) Ch, chloroplast; GG, globules with microcrystalline guanine; P, pyrenoid; V, vacuole.