93.4 MB (4.4 MB compressed)
7000 x 4666 pixels
59.2 x 39.6 cm ⏐ 23.3 x 15.6 in (300dpi)
KATERYNA KON / SCIENCE PHOTO LIBRARY KATERYNA KON / SCIENCE PHOTO LIBRARY
Computer illustration of a human heart and light micrograph of heart muscle. Heart muscle is composed of spindle-shaped cells grouped in irregular bundles. Boundaries between individual cells are faintly visible here. Each cell contains one nucleus, visible as a dark stained spot. Cardiac muscle is a specialised muscle tissue that can contract regularly and continuously without tiring.
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