Fig. 1From: Insights into the present and future of cartilage regeneration and joint repairThe figure is a schematic image of the use of gradient nanotechnology in cell differentiation. The cells are seeded on a gradient surface (left), and the differentiation process reveals an optimal cell population (middle). A specific molecular density surface provides optimal, homogenous cell populations (right), a possibility owed to the information gathered on the gradientBack to article page