Although the complement system forms part of the innate immune system, it can cause damage to the body in some cases. This is because unwanted complement activation contributes to many autoimmune and ...

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 ...

A new analysis of lung epithelial cells from COVID-19 patients reveals how the protective complement branch of the immune system, which usually plays roles in both innate and adaptive immunity, can ...

Among people with sickle cell disease—an inherited blood disorder—acute chest syndrome (ACS) is the leading cause of death. The condition is the result of red blood cells becoming stiff, sticky, and ...