Fig. 3.

Immuno-peroxidase staining of serial cross sections from the orbital (OL) and global muscle layer (GL) of human (left column) and rat (right column) medial ocular rectus muscle, assayed for myosin heavy chain isoforms: MyHC-1 (β slow) (BA-D5 as monoclonal antibody), MyHC-2a (SC-71), MyHC-2b (BF-F3). Two fiber types are indicated in the orbital muscle layer (numbered 1 and 2). Four different fiber types are indicated in the global muscle layer (numbered as 6, and 3, 4, 5). Scale bar 50 µm