Under the Microscope: The Development of a Mouse Embryo

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Erica Watson, a research fellow at Cambridge University, shares amazing images of the three-week gestation of a mouse fetus. "The smallest fetus in the video is the thickness of a penny and the largest one is the size of a blueberry," she explains on the YouTube page of the university's Under the Microscope series. 

The ongoing series makes microscopic photos and videos from the university's labs, like this footage of a T-cell destroying a cancer cell, available to the public. 

For more videos from Cambridge University, visit the YouTube channel

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Kasia Cieplak-Mayr von Baldegg is the executive producer for video at The AtlanticMore

Cieplak-Mayr von Baldegg joined The Atlantic in 2011 to launch its video channel and, in 2013, create its in-house video production department. She leads the development and production of original documentaries, interviews, and other video content for The Atlantic. Previously, she worked as a producer at Al Gore’s Current TV and as a content strategist and documentary producer in San Francisco. She studied filmmaking and digital media at Harvard University.
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