Metabolomic phenotyping of a cloned pig model

BMC Physiology

Table 1 PCA models for NMR spectral data

Bio-fluid	Normalization	n	Number of components	R²X	Q² (cum)
Bile	+	11	1	0.57	0.36
Bile	-^a	11	2	0.40	0.37
Urine	+	11	3	0.57	-0.17
Urine	-	11	2	0.39	0.12
Plasma	+	110	10	0.97	0.74
Plasma	-	110	10	0.95	0.91

Summary of PCA models of all biofluids, with and without normalization
^aFirst component was used to describe the variation induced by one outlier. This outlier was included in the analysis, since the second component, which described the difference between groups, was not affected by it.

ISSN: 1472-6793