An American Company Develops Genetically Modified Pig
Pigs used at United Therapeutics Corporation
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Pigs used at United Therapeutics Corporation
A vial of vaccine used during trials
Supporters of President Donald Trump climb the west wall of the the U.S. Capitol
A fourth-grade class uses buckets for seats as they study outside at the Gerald Talbot School in Portland, Maine
Longleaf pines, about 80 to 85 years old, stand tall in the DeSoto National Forest
82-year-old Brian Pinker receives the Oxford University-AstraZeneca COVID-19 vaccine
Japan Aerospace Exploration Agency member retrieves an asteroid capsule
A thermopolium in the Pompeii archeological dig
A sign for Navajo Drive in Utah is seen against cloud-darkened sky
A view from a news conference in Denmark