Embryoids like this one are created from stem cells and resemble very primitive human embryos. Scientists are studying them in hopes of learning more about basic human biology and development. Courtesy of Rockefeller University hide caption

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Courtesy of Rockefeller University
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Ketamine For Severe Depression: 'How Do You Not Offer This Drug To People?'

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A prisoner works on the lawn at the Dade Correctional Institution In 2014, in Florida City, Fla. On Friday, Miami-Dade prosecutor Katherine Fernandez Rundle found no wrongdoing in the death of mentally ill prisoner Darren Rainey, who was locked in a shower stall at the Dade Correctional Institution in June 2012. He died after he was left unattended for two hours with the water running. Lynne Sladky/AP hide caption

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Gilead Sciences Inc. makes the two leading drugs that can quickly cure hepatitis C infections. But most patients can't afford the expensive drugs, and states restrict their use among Medicaid patients. David Paul Morris/Bloomberg via Getty Images hide caption

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David Paul Morris/Bloomberg via Getty Images

Should The U.S. Government Buy A Drug Company To Save Money?

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By combining results of common blood tests, the researchers were able to come up with a way to predict risk of diabetes and other chronic diseases. Martynasfoto/Getty Images/iStockphoto hide caption

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Martynasfoto/Getty Images/iStockphoto

Birth control pills actually may be safer for teenagers than for older women, a study finds. BSIP/UIG/Getty Images hide caption

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Over-The-Counter Birth Control Pills Would Be Safe For Teens, Researchers Say

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Rep. Lloyd Doggett, D-Texas, is promoting a campaign to get the National Institutes of Health to exercise the patent rights it already owns in regards to certain drugs to bring down their price. Bill Clark/CQ-Roll Call, Inc. hide caption

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Bill Clark/CQ-Roll Call, Inc.

One Way To Force Down Drug Prices: Have The U.S. Exercise Its Patent Rights

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Opana ER was reformulated to make it harder to crush and snort, but people abusing the drug turned to injecting it instead. And that fueled an HIV outbreak in Indiana. Rich Pedroncelli/AP hide caption

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Rich Pedroncelli/AP

Medical graduates from Iran, in Philadelphia on research fellowships, anxiously await results of their U.S. medical residency applications. The Trump administration's immigration executive order has put added stress on "match week" for them. Elana Gordon/WHYY hide caption

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Elana Gordon/WHYY

Travel Ban Adds Stress To 'Match Week' For Some Doctors

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Michael Botticelli, former director of the Office of National Drug Control Policy, testifies during a Senate Judiciary Committee hearing on attacking America's epidemic of heroin and prescription drug abuse. Alex Brandon/AP hide caption

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Alex Brandon/AP

Former Drug Czar Says GOP Health Bill Would Cut Access To Addiction Treatment

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A colored magnetic resonance imaging (MRI) scans of the brain of a 76-year-old patient with dementia shows the brain has atrophied and the dark brown fluid-filled spaces have become enlarged. Zephyr/Science Source hide caption

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Cancer Drug That Might Slow Parkinson's, Alzheimer's Headed For Bigger Tests

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Cancer patient John Krahne has delayed taking a prescribed cancer drug because it was too expensive. He walks near his home in Santa Rosa, Calif. Robert Durell for Kaiser Health News hide caption

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Robert Durell for Kaiser Health News

Donald Boyer (right) and Ann Justi celebrate their wedding with Rabbi Andy Dubin at their home in Yonkers, N.Y. Fred Mogul/WNYC hide caption

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Fred Mogul/WNYC

Love In The Time Of Repeal And Replace

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Sometimes fast-acting chemotherapy can help slow an aggressive cancer — and give the slower-acting immunotherapies a chance to work. UIG Platinum/UIG via Getty Images hide caption

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UIG Platinum/UIG via Getty Images

Old-Style Chemo Is Still A Mainstay In The Age Of Targeted Cancer Therapy

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Colored scanning electron micrograph of baker's yeast, conventionally grown in the lab. So far, researchers have been able to synthesize six of the yeast's 16 chromosomes from scratch, and think they may be able to complete all 16 by 2018. Dennis Kunkel Microscopy/Science Source hide caption

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Dennis Kunkel Microscopy/Science Source

Scientists Closer To Creating A Fully Synthetic Yeast Genome

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Rep. Elijah Cummings, D-Md., listens as Rep. Peter Welch, D-Vt., speaks to members of the media Wednesday outside the West Wing of the White House in Washington following their meeting with President Trump. Pablo Martinez Monsivais/AP hide caption

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Pablo Martinez Monsivais/AP