Why is cell signaling important?

Information does not circulate among the surrounding cells if they are not communicating with one another.

Consider the human immune system. In order for the body to identify various viruses, the viral proteins are "stored" in it. This complex system requires cells to communicate with one another regarding the viral proteins.

Sometimes a cell will release signals, or cytokines, to trigger an action in another cell. These actions can vary widely and are specific to each individual cell.

Imagine that you have a group of people in a burning building. The person closest to the fire will signal to the others that there is a fire, and if no one signals, the others won't be warned in time.

Cell signaling plays a vital role in the body's processes of growth, development, immunity, and homeostasis because it enables cells to coordinate their activities and communicate with one another. Without cell signaling, cells would not be able to respond to their environment in a way that would cause dysfunction and disease.