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. 2019 Jun 21;7:e7064. doi: 10.7717/peerj.7064

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© 2019 Carballo-Uicab et al.

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.

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(A) Immature seed, (B) immature seed longitudinal cut, (C) immature seed longitudinal cut in paraffin, (D) S2 structure, (E) S3 structure, (F) S4 structure. BSC, bixin storage cell. Bar 100 μm. Photos by Victor Manuel Carballo-Uicab.