As show in Figures 7A,B, the levels of NHE3 phosphorylation at serine 552 (PS552-NHE3) were much lower in HF than in sham-operated rats (39 ± 4 vs. 100 ± 3%, P < 0.01) (Figures 7A,B). Here, SLC9A3 is linked to hydrops fetalis.