Methods and products relating the preservation of cultured mammalian epithelial or mesenchymal cells are provided. The brightness enhancement article has a plurality of light collecting structures wherein each light collecting structure is longitudinally extended in a length direction along the surface. The bonding substrate is disposed on the p-type electrode. A rotor fixed to the drive shaft is disposed in the operation chamber. In an alternate configuration the extension portion of the adapter can be secured to a suction cup, in order to allow the adapter to support a toothbrush on a substantially vertical surface, such as a mirror or tile wall. Such monomers are useful for the preparation of tagged treatment polymers.