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. 2019 Apr 18;7:e6789. doi: 10.7717/peerj.6789

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©2019 Albertini 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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The different groups (CTRL, EtOH and P+EtOH) are displayed with different colours (see legend inside the figure). The 95 % confidence ellipses are also shown. Principal Component Analysis (PCA) represented by a scatter plot of PC1 (highly correlated with Perimeter, Major axis of the best fitting ellipse, Feret’s diameter and Integrated Density) and PC2 (highly correlated with Minor axis of the best fitting ellipse). The different groups (CTRL, EtOH and P+EtOH) are marked differently (black, white and grey; see legend inside the figure). The 95% confidence ellipses are also shown.