Premium

Some viruses can wreak havoc on the brain. These UT scientists are working on a way to fix that.

By , Special to The Daily Memphian Updated: November 30, 2025 5:45 PM CT | Published: November 28, 2025 4:00 AM CT

Colleen Jonsson, Ph.D., is a virologist at the University of Tennessee Health Science Center and, over the years, she’s developed a deep understanding about how our brains are protected. 

“It’s remarkable and fascinating how it evolved,” she said. 

Defending your brain, she explained, is a robust barrier, comprised of blood vessels, with gates designed to only let in nutrients. Glucose? Come on in. Sodium? Absolutely. Potassium? Yes, please.

This is an excerpt of this story. To read more, please click here and subscribe.

Topics

UTHSC Subscriber Only

2025 is almost over. Now is the time to support your trusted local news source.

Will you help us reach more Memphians with quality, in-depth local news? Make a fully tax-deductible donation or other contribution to The Daily Memphian, a 501(c)3 nonprofit news organization, today.

Thank you for keeping up with what’s happening in Memphis. Thank you for investing in our community’s trusted local news source.

John Klyce

John Klyce is a freelance writer for The Daily Memphian.


Comments

Want to comment on our stories or respond to others? Join the conversation by subscribing now. Only paid subscribers can add their thoughts or upvote/downvote comments. Our commenting policy can be viewed here