Figure 2 From: Immunomodulatory parasites and toll-like receptor-mediated tumour necrosis factor alpha responsiveness in wild mammals Strong positive covariation amongst toll-like receptor (TLR)-mediated responses. A) A principal components analysis (PCA) of log-transformed TLR-mediated responses showed a dominant first component (PC1I) accounting for 48% of total variation. For each TLR-mediated response, PC1I coefficients (shown alongside) are of similar magnitude and the same sign, indicating a general pattern of positive association. B) Scree plot of PCA eigenvalues, showing the predominance of the first component. C) Matrix of bivariate scatterplots between untransformed TLR-mediated responses with non-parametric correlation coefficient (Spearman's) and least squares regression line shown for reference.Back to article page