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Scientists catch heartbeat ‘molecular switch’ in action A single heart muscle cell (at x2000 magnification) : the red calcium indicator lines up precisely between the green stripes, which mark where the muscles’ contractive machinery is anchored. In every heartbeat, the distance between the green bands (which are just 2 micrometres apart, or about 1/40 the thickness of a human hair) reduces by just 10%, so all heart muscle cells need to contract together to pump blood – normal calcium activity is essential for this synchronization (Image credit: Paul Robinson).

Visualising the flow of calcium that makes the heart beat

Scientists at Oxford University have devised a new method that uses protein originally found in marine corals to uncover the effects of genetic errors...
A Sensor Molecule to Visualize Signals from Brain and Heart

A Sensor Molecule to Visualize Signals from Brain and Heart

The concentration of calcium in and around cells monitors the key processes in the body. Now, scientists at the Technical University of Munich (TUM) in...

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