Scientists in Germany have created a mini heart out of
stem cells. The heart is around half a millimeter
in diameter. It can also contract contract like a
full size human heart. The heart stops to develop
uh at about three weeks into pregnancy before most women
even know that they're expecting. And because of this
, we know little about the beginning of heart formations
. Further research on this organoid will allow researchers to
deepen their understanding of the early stages of heart development
and also possible causes of heart disease as well.