An organic electro-luminescent display device includes a substrate, a pixel electrode on the substrate, and a pixel define layer covering edges of the pixel electrode and having an opening to expose the pixel electrode, a surface of the pixel define layer facing the opening being bent at a predetermined curvature. Also provided are kits comprising one or more apparatuses for cryopreserving cells and a biopreservation medium. The inventor also provides methods for reducing on or more side effects of administration of the pharmaceutical composition, and methods for enhancing transport and binding of a pharmaceutical agent to a cell.