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Messenger RNA carries the instructions for life from DNA to the rest of the cell. ktsimage/iStock via Getty Images Plus

What is mRNA? The messenger molecule that’s been in every living cell for billions of years is the key ingredient in some COVID‑19 vaccines

In the spotlight for its role in COVID-19 vaccines – and a Nobel Prize – mRNA is not a new invention. It’s a crucial messenger molecule at work every day in every cell in your body.
African Americans have worse health outcomes and die earlier than whites. Monkey Business Images/Shutterstock.com

Study: Racism shortens lives and hurts health of blacks by promoting genes that lead to inflammation and illness

The recent death of Elijah Cummings at age 68 underscores a disturbing statistic: black men die, on average, five years younger than white men. A study shows racism’s effects on gene activity.

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