complement §

Part of the innate immune system, it helps fight bacterial infections.

Activation Pathways §

A terrible diagram (╯°□°）╯︵ ┻━┻

antigen:antibody complexes can bind to C1q via the Fc region, and initiate the classical complement cascade, which recruits and activates phagocytes to engulf and destroy pathogens Janeway’s Chapter 5-13