Fig. 1.

Principal components analysis (PCA) of cell subsets and cytokines between sexes. PCA did not identify any classifiers discriminating cell subsets between the sexes (a). PCA identified sCD40L, platelet-derived growth factor (PDGF)-AA, growth-regulated oncogene (GRO) (CXCL1), macrophage-derived chemokine (MDC) (CCL22), fibroblast growth factor (FGF)-2, interleukin (IL)-8 and interferon (IFN)-γ as a set of classifiers discriminating between male and female subjects (b). Females are represented with red dots and males with blue dots.