ACO1 and hydrops fetalis: Obviously, at stage 6, ACO (Unigene0029908), ACO1 (Unigene0037768), CTR1 (Unigene0036282), and EIN2 (Unigene0029458) were up-regulated in the MF-HF comparison, while ACS and EIN3 were down-regulated in MF relative to HF.