Cellular Recall

Cells protect you long after exposure to a virus

Please note: This article was published more than one year ago. The facts and conclusions presented may have since changed and may no longer be accurate. And "More information" links may no longer work. Questions about personal health should always be referred to a physician or other health care professional.

(HealthDayNews) -- Your blood may have a better memory than your brain.

When you're exposed to a virus, your immune system makes antibodies that help protect against infection.

But your T-cells, which are a group of white blood cells, also learn the characteristics of the virus and help protect you.

Some of these T-cells have a very good memory. According to the Journal of Clinical Investigation, research shows that T-cells were protecting against a specific virus for as long as 13 years after a single exposure.

Last Updated: