Immunoglobulin genes might have evolved much earlier than previously expected, perhaps even in the common ancestor of Cnidarians and Bilateria, a study suggests.

Immune cells deliver packages of telomeres to T cells, helping them retain their virus-fighting function over time, research suggests.

The results could help guide the design of new vaccines for the disease.

Researchers find that tissue-resident memory T cells in the corneas of mice engender a lasting immune response.

Deletions in the sleepy lizard genome leave it without an important type of T cells found in most other vertebrates.

Roseolovirus infection disrupts how the body trains immune cells not to attack it, a mouse study shows.

A study identifies a gene that appears to be partially responsible for the health effects of a limited diet.

When coated with positively charged particles, the bacteria shuttled antigens out of tumors and activated the immune system, a study finds.

Specialized immune cells generated in vivo reduce cardiac scar tissue in mice, a new study shows.

Researchers report what appears to be the second case of a person’s immune system clearing the virus on its own.

It’s unclear whether differing odds of dying between men and women reflect inherent differences between male and female immune systems or differences rooted in gender norms.

More than a dozen vaccines for tuberculosis are currently being tested in clinical trials. Some use whole bacteria as BCG does, while others deliver protein subunits or genetic material carried by viral vectors.  

This month marks the 100-year anniversary of BCG, still the only approved vaccine against the lethal pathogen. But there are new vaccines for this wily foe on the horizon.