Principal component analysis.

<p>Control and diabetic pigs were either fed a healthy Mediterranean diet or a cafeteria diet differing mainly in fatty acid composition. Plasma protein profiles were determined with a SELDI-TOF equipment and analyzed in relation to physiological parameters. Example of the principal component analysis of peaks showing differential expression between the groups of animals: peak M/Z 6623, CM10, pH 7, fraction 3; ▴: Control Mediterranean diet, ♦: Control Cafeteria diet, •: Diabetes Mediterranean diet, ▪: Diabetes cafeteria diet.