A Case Report of Congenital Fiber Type Disproportion with an Increased Level of Anti-ACh Receptor Antibodies
Figure 1
Cryostat sections of the patient’s muscle biopsy. (a) Hematoxylin and eosin staining reveals clear variations in myofiber size. (b), (c), and (d) ATPase staining at 4.2 (b), 4.6 (c), and 11 (d). The “1” and “2A” in the figure denote type 1 and 2A fibers, respectively. The findings indicate that type 1 fibers were 12% smaller than type 2 fibers, while type 2B fibers were deficient.
