FABP2 and hydrops fetalis: To explore whether IFABP−/− and LFABP−/− mice displayed alterations in the gut microbiota, we collected fecal samples from WT, IFABP−/−, and LFABP−/− mice (n = 6 per group) at both week 0 (8 weeks of age, prior to the HFD feeding period) and at week 11 of HF feeding, to profile gut microbiota composition via 16S rRNA gene V4 sequencing.