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Anti-angiogenic ratio of serum concentrations (medians with interquartile range). (A) sEng/TGF-β1, (B) sFlt1/PlGF and (C) (sFlt1 + sEng)/PlGF; HIV-positive pre-eclamptic (P+); HIV -negative pre-eclamptic (P–); HIV-negative normotensive (N–) and HIV-positive normotensive (N+).
