50.1 MB (50.0 MB compressed)
5091 x 3438 pixels
43.2 x 29.2 cm ⏐ 17.0 x 11.5 in (300dpi)
CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
Cardiac muscle, light micrograph. The heart largely consists of fibres (pink) of cardiac muscle (the myocardium) that contract to pump blood around the heart. This is a longitudinal section through the myofibrils, with the round areas being the cell nuclei, and the dark bands being intercalated discs.
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