CD8A and preeclampsia: A number of immune-related pathways were significantly up-regulated in preeclampsia placentas (Figures 3C, D), including the CD8 T cell differentiation pathway gene set (GOLDRATH_EFF_VS_MEMORY_CD8_TCELL_UP), DC activation pathway gene set (GSE14000_UNSTIM_VS_4H_LPS_DC_TRANSLATED_RNA_DN), and macrophage activation gene set (GSE25123_CTRL_VS_ROSIGLITAZONE_STIM_PPARG_KO_MACROPHAGE_UP).