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. 2019 Mar 11;20(5):1225. doi: 10.3390/ijms20051225

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Comparison of changes in protein and cognate mRNA abundance levels. The relative changes in abundance (S1/S0, S2/S1 and S3/S2) are shown using a log2 scale. The associate protein: mRNA were divided into 9 types using 9 quadrants and several colors, respectively representing the differential expression trend of protein: mRNA. The center of the black plot was marked as quadrant 5, where protein and mRNA levels did not vary above 1.2- and 2- fold, respectively. The red dots in quadrants 3 and 7, representing a positive correlation between protein abundance and transcript accumulation in different stage. The red dots in quadrants 1 and 9 show negative correlations. Green dots in quadrants 2 and 8 indicate no difference in protein expression, while transcriptional expression tends to be up-regulated or down-regulated. Blue dots in quadrants 4 and 6 show differences in protein expression, while transcriptional expression tends to be no significant difference.