Scientists 3D Print Human Heart Muscles

 A human embryonic stem cell line derived at Stanford
University. (REUTERS/Julie Baker/Stanford University School of
Medicine/California Institute for Regenerative Medicine/Handout)
A human embryonic stem cell line derived at Stanford University. (REUTERS/Julie Baker/Stanford University School of Medicine/California Institute for Regenerative Medicine/Handout)
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Scientists 3D Print Human Heart Muscles

 A human embryonic stem cell line derived at Stanford
University. (REUTERS/Julie Baker/Stanford University School of
Medicine/California Institute for Regenerative Medicine/Handout)
A human embryonic stem cell line derived at Stanford University. (REUTERS/Julie Baker/Stanford University School of Medicine/California Institute for Regenerative Medicine/Handout)

Heart diseases are the leading cause of death in the United States killing more than 600,000 people a year. A team of researchers at the University of Minnesota has 3D printed a functioning human heart pump in the lab, which could help save the lives of thousands of patients.

According to the Science Daily website, the researchers used a type of stem cells with the potential to develop into any type of cell in the body, in addition to a mix of proteins, and the printer's ink.

The heart muscle model is about 1.5 centimeters long and was specifically designed to fit into the abdominal cavity of a mouse for further study, the German News Agency reported.

The team said the new muscle can be used to study the functions of the heart, and the problems that might affect it.

Brenda Ogle from the Department of Biomedical Engineering in the University of Minnesota College, said this is a critical advance in heart research because this new study shows how we were able to 3D print heart muscle cells in a way that the cells could organize and work together.

"We now have a model to track and trace what is happening at the cell and molecular level. We can introduce disease and damage into the model and then study the effects of medicines and other therapeutics," she explained.



Runaway Pet Zebra Captured in Tennessee

In this image taken from June 8, 2025, video by the Rutherford County Sheriff's Office in Rutherford County, Tennessee, shows the airlifting of a zebra named Ed that had evaded capture for several days after it ran away from its owner. (Rutherford County Sheriff's Office via AP)
In this image taken from June 8, 2025, video by the Rutherford County Sheriff's Office in Rutherford County, Tennessee, shows the airlifting of a zebra named Ed that had evaded capture for several days after it ran away from its owner. (Rutherford County Sheriff's Office via AP)
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Runaway Pet Zebra Captured in Tennessee

In this image taken from June 8, 2025, video by the Rutherford County Sheriff's Office in Rutherford County, Tennessee, shows the airlifting of a zebra named Ed that had evaded capture for several days after it ran away from its owner. (Rutherford County Sheriff's Office via AP)
In this image taken from June 8, 2025, video by the Rutherford County Sheriff's Office in Rutherford County, Tennessee, shows the airlifting of a zebra named Ed that had evaded capture for several days after it ran away from its owner. (Rutherford County Sheriff's Office via AP)

A runaway pet zebra that was on the loose for more than a week in Tennessee and became an internet sensation in the process was captured Sunday, authorities said.

Ed the Zebra was captured safely after being located in a pasture near a subdivision in the Christiana community in central Tennessee, the Rutherford County Sheriff’s Office confirmed. The sheriff’s office said aviation crews captured the zebra, The Associated Press reported.

“Ed was airlifted and flown by helicopter back to a waiting animal trailer,” the sheriff's office said in a statement.

Video posted by the sheriff's office shows Ed wrapped in a net with his head sticking out as he is carried by the helicopter to the trailer.

Ed arrived in Christiana on May 30, the sheriff's office said. His owner reported him missing the next day.

The zebra was spotted and filmed running along Interstate 24, forcing deputies to shut the roadway. But Ed escaped into a wooded area.

There were several sightings posted to social media. Ed was filmed trotting through a neighborhood.

The zebra quickly became the subject of internet memes. One fake posting showed Ed dining at a Waffle House, a southern staple. Others had him visiting other Tennessee cities or panhandling on the side of the road.