A method is used for making an artificial micro-gland by taxis. A monodisperse multiple emulsion is produced with a first fluid a second fluid confined within the first fluid a third fluid within the second fluid. Interfaces between the fluids permit living cells dispersed in the one of the fluids to migrate towards an adjacent fluid having a different concentration of an agent affecting the metabolic activity of the living cells. Waiting, usually about 30 minutes, allows the living cells to migrate to the interface, forming the continuous membrane. Once formed, the artificial micro-gland is removed from the remains of the emulsion. The artificial micro-gland may also be given a second layer of different cells when the emission of the cells of the artificial micro-gland is used as the agent to attract the different cells. The method may also be used to produce an artificial micro-gland within an artificial micro-gland.
