So, for example, let's take tryptophan. Tryptophan, if it follows a specific pathway, that will ultimately lead to the production of pyruvate. Now, Pyruvate basically goes this way via the pyruvate carboxylase enzyme that forms oxalo acetate, and that then helps to form glucose via glucomgenesis. Now, if we look at aspartate, for example, aspartate can be transformed into oxalo acetate, and we actually looked at this example in a previous lecture, and then the oxylacetade goes on to form glucose via glucaniogenesis. So all of these amino acids are known as glucogenic. Now, if we look at these, these and these ultimately helps us form these two molecules.