(K–M) Confocal images of Tg(neurod1:RFP); Tg(NFΚB:EGFP) zebrafish intestine in 10 hr HF fed larvae (K), 10 hr HF fed larvae treated with 0.1 mM orlistat (L) and 10 hr HF fed larvae treated with 0.5 mM TUDCA (M). The gene discussed is NEUROD1; the disease is hydrops fetalis.