LCN2 and hydrops fetalis: Further analysis demonstrated that the endogenous production of ω-3 PUFA did not affect fecal lipocalin 2 (Lcn2), caecum weight, or caecal SCFA (Figure S3C–K), whereas caecum of HF-ω3 mice were heavier than HF-ω6 mice, with higher concentrations of isovalerate and isobutyrate (Figure S2L–T).