Figure 5
From: qRT-PCR evaluation of the transcriptional response of zebra mussel to heavy metals
Principal component analysis: loadings plots. a) Individual bar diagrams for PC1, PC2, PC3 and PC4 (gills: red bars, digestive glands: green bars), b) PC2 vs. PC1 scatter plots and c) PC3 vs. PC2 scatter plots (in b) and c) gills genes: red diamonds and digestive glands genes: green squares).