Gluconeogenesis is the process by which certain types of cells of our body have the ability to actually synthesize glucose molecules by using noncarbohydrate precursor molecules. So these precursor molecules include pyruvate molecules, lactate molecules, glycerol molecules, and amino acids. So these are the major types of nonsugar precursors that we use inside our body to synthesize glucose via glucaneogenesis. Now, only specific types of cells in our body are actually able to undergo gluconeogenesis. So these include liver cells and to a small extent, kidney cells, because it's the liver and the kidneys that are responsible for actually regulating and maintaining the proper glucose level in our blood. So liver cells, hepatitis and kidney cells are able to actually undergo the process of gluconeogenesis.