A mobile radio communications network includes mobile radio units, radio base stations for communicating with the mobile radio units over a radio-based channel, and a radio switching controller connected to the radio base stations for routing calls to and from various ones of the base stations. The base label with a matching release web is made of the same starting material as the top label with a matching release web and the base label and the top label are brought together on the release web of the base label in a relative displaced position and with a special treatment, e. Comparative and mutational analyses of the two proteins, together with previous observations, suggest that the Ced-3 protein may be a cysteine protease like ICE and that ICE may be a human equivalent of the nematode cell death gene. This is preferable achieved by including additives, such as plasticizers and diluents, to the solution from which the polycrystalline material is formed. An icon may be displayed on a display specific to the type of memory card inserted.