The invention relates to a method for determining the viability of cells in cell cultures, said method comprising the steps of: coloring the sample with a dye which can penetrate into individual cells depending on the viability of the latter, determining the proportions of cells which are colored to differing extents. Configurable garment includes ornamental element, pattern display, and personal identifier and wireless sensor electronics. In addition, first and second light emission sustaining processes are executed for emitting discharge cells in the light emitting state out of the discharge cells belonging to the first and second display areas. The shutter lever is provided at a position coming into contact with the lock lever and the dustproof shutter when the cover is closed. These compounds show anti-proliferative activity, including against tumor cells, and are useful in the treatment of diseases including cancer. The technical solution to the degradation of the adhesive includes both 193 nm scatter light reduction and protective coatings of plasma modified AlF3 films on at least that part of the optical element that is in contact with the adhesive.