Immunity to infection (3/cytokines)

What is the name given to a chemical released by a cell acts on the same cell that secreted it?

Cytokines are very difficult to study for lots of different reasons however there are 4 key ones. What word describes the fact that a single cytokine might have lots of different functions?

That multiple cytokines may have the same effect?

That one cytokine may hinder the effect of another?

When more than one cytokine acts together the effect is great than the sum when alone?

What is the name of the signal transduction pathway that cytokines work through?

What group of cytokine's function is generally antiviral and cell activating?

What is the name for the subgroup of cytokines, one of which being CXCL8, which are involved in controlling cell movement?

IL-6 induces the release of both fibrinogen and C-reactive protein from hepatocytes, what is the name for this group of molecules?

Leukotrienes are one but what is the other potent inflammatory mediator that is a breakdown product of arachadonic acid, and leads to vasodilation and increased vascular permeability?

The kinin system results in the production of a molecule that increases vascular permeability, induces vasodilation, pain and activates complement what is the molecule?