Transmission electron micrograph of rat heart cardiac muscle from the atrium showing the regular arrangement of the actin-myosin myofilaments in cross section and abundant mitochondria. This 1958 TE...

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.

The C2C12 cell line, a mouse myoblast line, was used here to study the regulatory factors in myogenic differentiation. After cultured in differentiation medium for 3 days, these cells differentiated i...

The C2C12 cell line, a mouse myoblast line, was used here to study the regulatory factors in myogenic differentiation. After cultured in differentiation medium for 3 days, these cells differentiated i...

The C2C12 cell line, a mouse myoblast line, was used here to study the regulatory factors in myogenic differentiation. After cultured in differentiation medium for 3 days, these cells differentiated i...

The C2C12 cell line, a mouse myoblast line, was used here to study the regulatory factors in myogenic differentiation. After cultured in differentiation medium for 3 days, these cells differentiated i...

Mouse myoblast cells were engineered to express GFP-PCNA (proliferating cell nuclear antigen) as a marker for replication factories, and also immunostained for DNA ligase. DNA was localized using Hoec...

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...