Transmission electron micrograph of longitudinal section of rat cardiac muscle from the atrium. A of group of horizontally-running myofibrils is seen at the top. Also prominent are numerous glycogen...

Transmission electron micrograph of mouse cardiac muscle in the ventricle. A white blood cell is visible inside a blood vessel.

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.

Transmission electron micrograph of mouse cardiac muscle (ventricle). The image illustrates the myofibrils as well as a sarcomere in the area of fibrils between the two Z-lines. Z-lines link actin fi...

Transmission electron micrograph showing adjacent muscle fibers from the ventricle of a mouse cardiac muscle. This image shows the organization of muscle tissue, nucleus, cell walls and blood vessels...

Transmission electron micrograph of four longitudinally cut ventricle muscle fibers of mouse cardiac tissue. Muscle fibers are multinucleate celsl composed of myofibrils that contract when stimulated...

Transmission electron micrograph of a blood vessel in the atria of a mouse cardiac tissue. This image is a close up of a red blood cell in a blood vessel.

Figure 428 from Chapter 16 (Cytoplasmic matrix and cytoskeleton) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. Papillary muscle of cat heart shows one sarcomere length of two adjacent myofibrils at h...

Transmission electron micrograph showing the nucleus of a mouse cardiac tissue with nucleolus. At the center of the image is a large structure called the nucleus which is a membrane-limited compartmen...

Transmission electron micrograph showing an over view of muscle tissue configuration from a mouse cardiac muscle ventricle. This image shows muscle to muscle connection and the abundance of mitochond...