Human heart
Latest about Heart & Circulation
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Cholesterol-gobbling gut bacteria could protect against heart disease
By Sneha Khedkar published
Certain microbes in the gut microbiome may guard against heart disease by lowering people's cholesterol.
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Never-before-seen cells unveiled in detailed map of developing human heart
By Clarissa Brincat published
The most comprehensive cell "atlas" of the developing human heart to date was crafted using cutting-edge technology and includes never-before-seen cell types.
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Extreme exercise can pose risks. A cardiologist explains why.
By William Cornwell published
Moderate exercise is good for the heart, but high levels of exercise can cause a phenomenon known as "athletic heart," which comes with risks.
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Scientists developing new 'heart-on-a-chip'
By Emily Cooke published
So-called heart-on-a-chip systems may enable scientists to evaluate the safety and efficacy of new drugs more accurately than they can with animal tests.
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What's the rarest blood type?
By Rachael Rettner last updated
Blood typing is particularly important for blood transfusions.
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'Ice printing' tiny sculptures could help scientists engineer blood vessels
By Nicoletta Lanese published
A technique for printing 3D structures from ice could be used to help make artificial veins and arteries.
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1st partial-heart transplant growing with baby 1 year later
By Nicoletta Lanese published
Heart valves transplanted as part of the first partial-heart transplant in a human are now growing along with the infant who received them.
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What is a heart murmur?
By Anna Gora published
Heart murmurs are extra, unusual sounds heard during a heartbeat — but why do they happen?
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