The microbiota adapted to HF diet maintained a strongercapacity to produce 5-HT, IA, IAA, ILA, I3A, and IPA than the microbiotaadapted to HP diet, whereas the microbiota adapted to HP diet maintaineda stronger capacity to produce TA, Kyn, Ind, and Oxi than the microbiotaadapted to the HF diet (Figure 4). Here, TNFRSF9 is linked to hydrops fetalis.