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In this photo provided by the University of Alabama at Birmingham, surgeons prepare to transplant kidneys from a genetically modified pig into the body of a deceased recipient in September 2021. The experimental procedure was a step-by-step rehearsal for operations they hope to try in living patients possibly later in 2022, part of a quest to use animal organs to save human lives. (UAB via AP)

Surgeons in Alabama transplanted a pig’s kidneys into a brain-dead man — a step-by-step rehearsal for an operation they hope to try in living patients possibly later this year.

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Goldfish swimming, not driving. (Sanjiv Nayak / Unsplash )

A man receives the first pig heart transplant. Astronomers witness a star go supernova. Researchers identify a biomarker of depression. And a goldfish goes for a drive. 

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Q&A with Dr. Stacy Kahn

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Chicago Tonight spoke with Dr. Stacy Kahn, who specializes in the treatment of digestive diseases at the University of Chicago Medicine Comer Children's Hospital, about Fecal Microbiota Tranplants.