New genetic and patient analyses suggest severe COVID is linked to overactive complement, one of the immune system's oldest branches, and excess blood clotting. One of the immune system's oldest ...

One of the immune system's oldest branches, called complement, may be influencing the severity of COVID disease, according to a new study from researchers at Columbia University Irving Medical Center.

WEST LAFAYETTE, Ind. – New insights into the immune response to SARS-CoV-2 infections could bring better treatments for COVID-19 cases. An international team of researchers unexpectedly found that a ...

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 ...

Scientists have discovered a surprising response in lung cells infected with the SARS-CoV-2 virus, which might explain why the disease is so difficult to treat. The researchers suggest testing a new ...