Transmission electron micrograph of longitudinal section of rat heart cardiac muscle from the atrium. A darkly stained intercalated disc runs from upper left to lower right. Also prominent are groups...

Papillary muscle from cat heart shows a step-like end-to-end junction of two cardiac muscle cells. The longitudinally oriented lateral cell boundaries are straight and exhibit extensive gap junctions...

Transmission electron micrograph of mouse atrial cardiac muscle showing a close up image of the intercalated discs, which support synchronized contraction of the cardiac muscle.

Single computed slice from a tomographic reconstruction of a 500 nm section through the middle free wall of a cardiac myocyte from the left ventricle of an adult mouse (6-8 months of age), stained wit...

Portion of a single computed slice through a tomographic reconstruction of the myocardium of the left ventricle of a normal mouse. For more information see: Hayashi, T., Martone, M. E., Yu, Z., Thor,...

Transmission electron micrograph of intercalated disks with a desmosome from the atria of mouse cardiac muscle cells. The intercalated disks are where the junction of two opposing membranes of adjace...