As people age, immune cells called T cells tend to decline in both quantity and quality. Credit: National Institutes of Health, NIAID/SPL
A twice-weekly cocktail of three messenger RNAs can rejuvenate the weary immune systems of aged mice and

As people age, immune cells called T cells tend to decline in both quantity and quality. Credit: National Institutes of Health, NIAID/SPL
A twice-weekly cocktail of three messenger RNAs can rejuvenate the weary immune systems of aged mice and