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‘First’ 3D print of heart with human tissue, vessels unveiled

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Scientists in Israel unveiled a 3D print of a heart with human tissue and vessels on Monday, calling it a first and a “major medical breakthrough” that advances possibilities for transplants.

While it remains a far way off, scientists hope one day to be able to produce hearts suitable for transplant into humans as well as patches to regenerate defective hearts.

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The heart produced by researchers at Tel Aviv University is about the size of a rabbit’s.

It marked “the first time anyone anywhere has successfully engineered and printed an entire heart replete with cells, blood vessels, ventricles and chambers,” said Tal Dvir, who led the project.

“People have managed to 3D-print the structure of a heart in the past, but not with cells or with blood vessels,” he said.

But the scientists said many challenges remain before fully working 3D printed hearts will be available for transplant into patients.

Journalists were shown a 3D print of a heart about the size of a cherry at Tel Aviv University on Monday as the researchers announced their findings, published in the peer-reviewed journal Advanced Science.

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Researchers must now teach the printed hearts “to behave” like real ones. The cells are currently able to contract, but do not yet have the ability to pump.

Then they plan to transplant them into animal models, hopefully in about a year, said Dvir.

“Maybe, in 10 years, there will be organ printers in the finest hospitals around the world, and these procedures will be conducted routinely,” he said.

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But he said hospitals would likely start with simpler organs than hearts.

– Producing ‘ink’ –

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In its statement announcing the research, Tel Aviv University called it a “major medical breakthrough.”

A biopsy of fatty tissue was taken from patients that was used in the development of the “ink” for the 3D print.

First, patient-specific cardiac patches were created followed by the entire heart, the statement said.

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Using the patient’s own tissue is important to eliminate the risk of an implant provoking an immune response and being rejected, Dvir said.

Challenges that remain include how to expand the cells to have enough tissue to recreate a human-sized heart, he said.

Current 3D printers are also limited by the size of their resolution and another challenge will be figuring out how to print all small blood vessels.

3D printing has opened up possibilities in numerous fields, provoking both promise and controversy.

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The technology has developed to include 3D prints of everything from homes to guns.


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Colbert names Trump’s siege on DC the ‘Tinyman Square’ incident

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It wasn't quite Tiananmen Square, where a still-unknown number of Chinese protesters were murdered by the government in 1989, but it was the closest thing President Donald Trump managed to score this week.

After watching the footage of the military tear gas, beat and shoot at protesters so Trump could march from the presidential bunker to St. John's Church for the cameras.

"It was like Tiananmen Square," Colbert deemed. "Except, in Trump's case, Tinyman Square."

Trump claimed on "The Fox & Friends" that no one was tear-gassed, so it's unclear what was stinging people's eyes and making them cough, choke and tear up. The Park Police released a statement saying it wasn't tear gas. While the moment was captured on video from dozens of different camera angles, one protester actually grabbed a canister of Oleoresins Capiscum, or "OC," the gas that was used.

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Vladimir Putin must love watching the US fall apart: columnist

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New Yorker columnist Susan Glasser made the astute observation that if Russian President Vladimir Putin wanted to destabilize the United States with the election of President Donald Trump, he's clearly achieved his objective.

It was reported in March that Russian intelligence services are working to incite violence using white supremacist groups to try and sow racial chaos in the United States ahead of the November election.

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Conservative columnist links all Republicans to the attack on Lafayette Square

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Monday afternoon, President Donald Trump decided to walk across Lafayette Square for a photo-op. To get there, however, it took an outright battle with mounted park police, police covered in body armor and rattled Secret Service members who had just rushed the president to the bunker several nights before. Armed with semi-automatic weapons and military gear, they staged a siege on Lafayette Square against unarmed hippies, woke whites and people of color, again, forced to fight for justice.

Writing for the Washington Post Wednesday, conservative columnist Max Boot attacked Attorney General Bill Barr, who accepted responsibility for demanding that demonstrators be tear-gassed, beaten and shot with rubber bullets. Like Bull Conor ordering fire hoses on students marching in Birmingham, Alabama, Barr's attack on Lafayette Square for a photo-op proved he is willing to do what it takes to stroke the fractured ego of a president forced to cower in a bunker.

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