When visiting the meat counter of a supermarket, one does not need a microscope to see that liver and steak are different. They are different because their constituent cells are different. Microscopic observation confirms this notion. Liver cells...

Cells differ from each other in morphology (structure), and this difference is a reflection of physiological activities and biochemical functions that are ultimately under the control of genes. The differences that can be seen grossly, observed in the...

In developmental biology, cellular differentiation is the process by which a less specialized cell becomes a more specialized cell type. Differentiation occurs numerous times during the development of a multicellular organism as the organism changes...