The human heart starts as a single tube inside a developing baby. It grows quickly, bending and expanding into a soft sac of muscle the size of the infant’s fist. It usually develops flawless… ...

Six human genes were added to prevent blood from coagulating in the heart, improve molecular compatibility and reduce the risk of rejection. One final gene was turned off to keep the pig from ...

The heart icon looks nothing like a human heart. Here’s why. Lilly Price. USA TODAY. Sweethearts Candy may be gone this Valentine's Day, but that shape – you know the one! – is everywhere.

The world's first "printed heart" was made with actual human biological material, although only about the size of a rabbit’s heart, making it too small for a human, researchers said. But the ...

The TAU researchers' heart is made from human cells and patient-specific biological materials which serve as the bioinks for 3D printing of complex tissue models.