The fundamental unit of life is the cell and there are many different types of cells. In humans, for example, there are skin cells, muscle cells, blood cells and so forth. In all there are hundreds of different kinds of cells that need to work together in various ways. Now a recent study has investigated the different cell types in the retina of mice. The research focused on the number of cells present in the retina. That may not sound very interesting, but the results were indeed eye-opening. Read more