Compositions containing neurogenic agents for inhibition of neuron death and inducing proliferation of neural cells are disclosed. The sealing assembly includes a cap having a top surface and a bottom surface, an adhesive layer adjacent the bottom surface of the cap, and a septum adjacent to the adhesive layer. The glide pieces are movable along the glide groove of the cantilever and are positioned by fastening knobs. The area of exposure of the partitioning member to the second space is greater than the area of exposure of the partitioning member to the first space.