WNT11 and hydrops fetalis: Here, we observed that Wnt-related genes were up-regulated at E120 and NB, including WNT10A (wingless-type MMTV integration site family, member 10A), WNT11, and β-catenin (Table 4, S6 Fig), implying that these genes probably play critical roles in HF cytodifferentiation and maturation.