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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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