title: Diagonal Z-lines: an unexplained electron microscopic finding.
abstract: A patient suffering with myasthenia gravis was subjected to muscle biopsy of the deltoid and subsequently of the pectoralis muscle. Electron microscopic examination of the muscles revealed the scattered presence of Z-lines that were curiously orientated diagonally across the I band. This appears to be a coincidental finding, the significance of which is unknown and unreported at this time.
mesh_terms: D000328:Adult; D004796:Clinical Enzyme Tests; D003402:Creatine Kinase / Q000097:blood; D004172:Diplopia / Q000209:etiology*; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D009132:Muscles / Q000473:pathology / Q000648:ultrastructure*; D009157:Myasthenia Gravis / Q000175:diagnosis* / Q000473:pathology / Q000628:therapy; D013934:Thymectomy
chemical_list: D003402:Creatine Kinase