It is part of the innate immune system and normally helps to fight infections and eliminate damaged and infected body cells. "In patients with long COVID, the complement system no longer returns ...

In the human immune system, one consequence of complement activation is the covalent attachment of the C3d fragment of the third complement protein to the activating protein. C3d in turn binds to ...

A new paper by a team of Concordia researchers from the departments of Biology and Physics proposes a novel method of ...

Commit Biologics ("Commit"), a pioneer in the activation of the complement system to treat cancer and autoimmune disease, today announces ...