Biology

What secrets might 2-million-year-old DNA hold?

Scientists from Denmark recently extracted and sequenced the oldest-ever DNA, from permafrost in Greenland, revealing a robust ecosystem of 135 species. Penn Today spoke with four faculty members about the potential power of ancient DNA.

Katherine Unger Baillie

Recreating the adrenal gland in a petri dish

A School of Veterinary Medicine–led team coaxed stem cells to take on the characteristics and functions of a human adrenal gland, progress that could lead to new therapies for adrenal insufficiencies and a deeper understanding of the genetics of such disorders.

Katherine Unger Baillie

Making ‘true’ equine IVF a reproducible success

A new method developed by Katrin Hinrichs and colleagues in the School of Veterinary Medicine resulted in the birth of three healthy foals, opening the door to new insights in the basic biology of horse reproduction.

Katherine Unger Baillie



In the News


Newsweek

Man does DNA test, not prepared for what comes back ‘unusually high’

César de la Fuente of the School of Engineering and Applied Science and Perelman School of Medicine says that Neanderthal DNA provides insights into human evolution, population dynamics, and genetic adaptations, including correlations with traits such as immunity and susceptibility to diseases.

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Nature

Bird flu virus has been spreading in U.S. cows for months, RNA reveals

Louise Moncla of the Veterinary School of Medicine says that the bird flu virus is clearly being transmitted to cows in some way.

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Good Housekeeping

When is the best time to take L-theanine—morning or night?

According to Colleen Tewksbury of the School of Nursing, research suggests that L-theanine may help support stress management, sleep, and potentially weight management.

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Stat

Is the flu shot market a slam dunk for mRNA vaccines? Experts aren’t so sure

Scott Hensley of the Perelman School of Medicine is working on a flu vaccine to provide protection against 20 subtypes of flu that may pose a pandemic threat in the future.

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NPR

Thanks, Neanderthals: How our ancient relatives could help find new antibiotics

A study by César de la Fuente of the Perelman School of Medicine and colleagues used AI to recreate molecules from ancient humans that could be potential candidates for antimicrobial treatments.

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NPR

Long COVID brain fog may originate in a surprising place, say scientists

A study by Christoph Thaiss and Maayan Levy of the Perelman School of Medicine and colleagues finds that long COVID’s neurological symptoms, like brain fog, memory loss, and fatigue, may stem from serotonin reduction.

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