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Figure 4 | BMC Genomics

Figure 4

From: qRT-PCR evaluation of the transcriptional response of zebra mussel to heavy metals

Figure 4

Principal component analysis: scores plots. Scores plots (PC2 vs. PC1) with legend based on a) exposure time: control samples – blue triangles, 1-day treated samples – red diamonds and 7-days treated samples – green squares, b) treatment type: control samples – red diamonds, Cu treated samples – green squares, Cd treated samples – blue up-triangles, Hg treated samples – cyan down-triangles, and c) combination of exposure time and treatment type: Control samples – red diamonds, Cu and 1-day samples – green squares, Cd and 1-day samples – blue up-triangles, Hg and 1-day samples – cyan down-triangles, Cu and 7-days samples – black stars, Cd and 7-days samples – green circles and Hg and 7-days samples – violet diamonds.

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