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.



UK's Princess Kate Visits Hospital Where She Had Cancer Treatment

 Catherine, Princess of Wales talks with Katherine Field as she visits The Royal Marsden Hospital on January 14, 2025 in London, Britain. Chris Jackson/Pool via REUTERS
Catherine, Princess of Wales talks with Katherine Field as she visits The Royal Marsden Hospital on January 14, 2025 in London, Britain. Chris Jackson/Pool via REUTERS
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UK's Princess Kate Visits Hospital Where She Had Cancer Treatment

 Catherine, Princess of Wales talks with Katherine Field as she visits The Royal Marsden Hospital on January 14, 2025 in London, Britain. Chris Jackson/Pool via REUTERS
Catherine, Princess of Wales talks with Katherine Field as she visits The Royal Marsden Hospital on January 14, 2025 in London, Britain. Chris Jackson/Pool via REUTERS

Kate, Britain's Princess of Wales, visited a London hospital on Tuesday where she underwent cancer treatment last year to personally thank medics there for their care and support, her office said.

Kate, 43, underwent a course of preventative chemotherapy after major abdominal surgery a year ago revealed the presence of cancer.

For the treatment, which concluded in September, Kate attended the Royal Marsden Hospital in central London and on Tuesday she paid an official visit there to mark her becoming joint patron of its specialist cancer unit along with her husband Prince William, Reuters reported.

On her visit she met patients and staff and spoke of her own treatment. A royal source said Kate had wanted to show her gratitude to the hospital staff and highlight its work.

"We are incredibly fortunate to receive Royal Patronage – it is inspiring for staff and patients and enables us to shine a light on the outstanding work our staff deliver every day for patients and their families," said Cally Palmer, Chief Executive of The Royal Marsden NHS Foundation Trust.

Kate's illness meant she was absent from royal duties for most of last year, although she gave a number of health updates in highly personal video messages.