And so what the body does is it responds by stimulating the beta cells of the eyelids of Langerhine that are part of the pancreas to release insulin molecules into the blood. And insulin is a small peptide hormone. Now, what insulin does is it initiates this signal transduction pathway. And the signal transduction pathway is actually very complicated, very complex and very extensive. And so what I'd like to focus on in this lecture is actually a small section of this insulin signal transduction pathway that stimulates the absorption of the glucose by the cells and a subsequent transformation of the glucose into the glycogen form. So this is what I'd like to focus on in this lecture.