The Coffee Protective Effect on Catalase System in the Preneoplastic Induced Rat Liver

Figure 2

(a) Relation among the three studied variables: iron concentration (μg⋅g⁻¹), catalase activity (, s⁻¹⋅g protein⁻¹), and band intensity percentage (%). (b) Principal component analysis (PCA). The first (-axis) was able to explain about 60% of the total variability and the second ( axis) was able to explain about 25% with the ellipses of 95% confidence limits, constructed by bootstrap resampling, using replicates of the original data.

(a)

(b)