Striated muscle fibers of the heart myocardium stained with Mallory's phosphotungstic hematoxylin. The striated appearance of the cardiomyocytes and the intercalated disks stand out clearly.

aging anatomy cardiac cell fiber fibre heart histology intercalated disks light microscope lipofuscin lm micrograph microscope microscopic microscopy muscle myocardiocyte myocardium myocyte myofibril skeletal striated tissue