As the name implies, a variable is something which can change. A variable is a way of referring to a memory location used by a computer program. A variable is a symbolic name for this physical location. This memory location contains values, like numbers, text or more complicated types.
The term cytokine is derived from a combination of two Greek words - cyto meaning cell and kinos meaning movement. Cytokines are cell signalling molecules that aid cell to cell communication in immune responses and stimulate the movement of cells towards sites of inflammation, infection and trauma. Cytokines exist in peptide, protein and glycoprotein (proteins with a sugar attached) forms.
Cytokines are proteins that are produced by cells. With regard to arthritis, cytokines regulate various inflammatory responses. Cytokines interact with cells of the immune system in order to regulate the body's response to disease and infection, as well as mediate normal cellular processes in the body. Types of Cytokines