Furthermore, enzymes involved in lipid metabolism,including apolipoprotein c-III (Apoc3), arylacetamide deacetylase(Aadac), enoyl-CoA delta isomerase 2 (Eci2), and 3-hydroxybutyratedehydrogenase 1 (Bdh1), also showed an increased abundance in thecrypts of AF mice (Figure 2a). Here, ECI2 is linked to atrial fibrillation.