So we see in this final step activated ERCs move into the nucleus and stimulate transcription factors to increase gene expression. This increases the rate of protein production which enlarges the cytoskeleton and leads to cell growth and ultimately might lead to cell division to basically produce many more of these cells that were damaged as a result of, let's say, that particular cut that we experienced on our skin. So this is what we call the EGF signal transduction pathway. It is basically used to allow the growth and division of either epidermal cells or the epithelial cells of our body. And notice that in this particular case, just like in the Insulin case, this receptor actually contained a tyrosine protein kinase domain. And this particular pathway, just like the epinephrine pathway also used a specific type of molecule that is stimulated as a result of the binding of GTP.