Among inflammatory cytokines, HFRS group had lower colonic interleukin-2 (IL-2) expression compared to the HF and the control groups (0.55+0.12 in HFRS vs. 0.99+0.07 in HF, p=0.04; 0.55+0.12 in HFRS vs. 1.00+0.14 in control, p=0.03, Figure 2F). Here, IL2 is linked to hydrops fetalis.