T lymphopenia happens during sepsis, making infections worse due to a lack of T cells that help control inflammation.
Researchers found that a special protein called soluble CD4 (sCD4) interacts with another protein on immune cells called MHC II to help reduce this harmful inflammation.
This interaction prevents overactivation of other proteins that cause inflammation, suggesting that using sCD4 could be a helpful new way to treat sepsis and control inflammation in the body.