So, unlike penocytosis, in which we have a random type of process in which it's not specific this is more specific and it involves these protein receptors found on the cell membrane as well as on that object in this case, our bacterial cell. Now, the final type of endocytotic process we're going to discuss is receptor mediated endocytosis. So this is basically the most specific type of endocytotic process and it involves the ingestion of macromolecules such as sugars and hormones and we also have the binding to our receptor proteins. Now, the main difference between phagocytosis and receptor mediated endocytosis is in phagocytosis, we have the bacterial cell that itself contains receptors that bind to a receptor proteins on the membrane. In this case, the actual molecule that is being ingested binds directly to the receptors of the cell membrane. Now, once the binding process takes place that binding basically signals for invagination of the cell membrane to take place.