Researchers at the Medical University of Vienna and the Medical University of Innsbruck discovered that SARS-CoV-2 hijacks three important host proteins that dampen the activity of the complement ...

A new study may have found what’s behind long COVID symptoms. Scientists say a portion of the immune system may stay activated after someone recovers from the virus. Research into what causes long ...

The complement system, a pivotal element of antiviral immunity, is a cascade of proteins found in the bloodstream and at mucosal sites, such as the respiratory tract. Activated through three different ...

University of Pennsylvania researchers have found a promising new treatment for periodontitis using a component of the immune system called complement, according to a new study in the Journal of ...

Many cancers produce an enzyme called IDO that suppresses immune system activity, but the long-held hypothesis of how this mechanism operates requires revision, according to a study published in ...