GCG and hydrops fetalis: The peak response to intrapelvic GLP-1 was higher in HF rats (3.68 ± 0.38 vs. 1.97 ± 0.39 μV s, P < 0.05, 66.0 ± 3.0 vs 43.9 ± 4.6% of ARNAmax, P < 0.05, Fig. 1e, f).