Fig. 4.
Two-dimensional scatter plots of the loadings of the first two factors PCs (PC1 and PC2) for lutein, lycopene and β-carotene retention factors by use of fifteen HPLC columns; a PCA and b CA diagram (Ward’s method)
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.