Cell sheet having hyaluronic acid production ability and method for producing same

On a cell culture support having a surface covered with a polymer that changes hydration force within a temperature range of 0-80°C, cells are cultured in a temperature zone in which the hydration force of the polymer is weak, in a state where, for example, the stem cell content has been increased. Thereafter, the cells are detached by changing the culture broth to a temperature at which the hydration force of the polymer becomes strong, thereby making it possible to obtain a cell sheet having a high ability to produce hyaluronic acid.