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. 2015 Feb 6;10(2):e0117325. doi: 10.1371/journal.pone.0117325

Fig 2. Exploratory factor analysis categorized cardiac function-related AAs by two components in the HF group.

Fig 2

A. A two-dimensional plot of factor loading. Cardiac function-related AAs and Fischer ratio in Fig. 1 were subjected to exploratory factor analysis that identified two potential factors by which AAs and ratio could be categorized: factor 1 (MEA, tyrosine, and Fischer ratio) and factor 2 (histidine, methionine, and 1-Me-His). The percentages in parentheses and values of the axes denote a contribution ratio of the factors and a factor loading, respectively. B and C. The correlations between AAs and Fischer ratio in A. Correlations of MEA with methionine and histidine and that of histidine and 1-Me-His were relatively weak.