The ubiquity of "myelin figures" as seen with electron microscopy.
D000818:Animals; D001717:Birds; D008055:Lipids / Q000032:analysis*; D008854:Microscopy, Electron; D008931:Mitochondria, Muscle; D009206:Myocardium / Q000032:analysis* / Q000166:cytology; D009210:Myofibrils
D008055:Lipids