Complement System – Definition, Activation, Effects, Regulation

Complement System Definition, Activation, Effects, Regulation

Complement system is a group of blood proteins that takes part in innate immune response. It helps in killing microbes, inflammation and phagocytosis. It also increases the action of antibodies and immune cells. Complement system is an important part of innate immune system. It acts as the first line defense against invading pathogens like bacteria, … Read more

Alternative Pathway – Definition, Components, Steps, Regulation, Functions

Alternative Pathway of Complement System

Complement system is an ancient part of innate immune system. It acts as first line defence of body against infections. It is present in blood and tissue fluid. It is made up of about 50 plasma and membrane bound proteins. These proteins remain mostly inactive form. After getting proper signal, they become activated one after … Read more

Lectin Pathway – Definition, Components, Step, Functions, Regulation

Lectin Pathway of the Complement System

Complement system is an important part of the innate immune system which acts as first line defence against infections. It protects the body from foreign microorganisms and also helps in removing damaged cells and immune complexes. It is present in blood and tissue fluid in inactive form. It is made up of many soluble plasma … Read more