"Revitalizing Aging Immune Systems: Breakthroughs in Mouse Studies"

Researchers have discovered that an age-associated imbalance in hematopoietic stem cells (HSCs) is responsible for the decline in immune function in older individuals. By restoring a youthful balance of these cells using antibody injections, scientists were able to rejuvenate the immune systems of older mice, enabling them to better fend off viral attacks, borrowing an idea from cancer immunotherapy.