Fig. 6.

Principal component analysis of Pseudomonas aeruginosa colonization and plasma lipids. PCA biplots correspond to bacterial colonization at t = 0 (A), bacterial colonization at t = 3 (B), and the evolution of bacterial colonization (C) as dependent variables. Spots labeled “0” denote noncolonized individuals; spots labeled “1” denote colonized individuals; spots labeled “A” denote noncolonized individuals at either t = 0 or t = 3; spots labeled “B” denote noncolonized individuals at t = 0 that are colonized at t = 3; spots labeled “C” denote colonized individuals at both t = 0 and t = 3; the spot labeled “D” represents one individual colonized at t = 0 and noncolonized at t = 3. Red spots and lines represent the four independent variables selected, namely LPC(18:0), C22:5n-3, TAG, and OEA. In each case, variables are represented by the first and second principal components (F1 and F2). Percent contribution of each principal component to total variance is indicated in the respective axis title.