An apparatus and method for performing procedures of a PDCP layer and an RLC which has evolved from UMTS, among radio protocols of a mobile communication system. Using a neuronal cell system, wherein the expression of familial Alzheimer’s disease mutant APP can be induced by ecdysone treatment, a gene that protects the neurons from cell death was successfully isolated. The assembly further includes a cold sleeve assembly comprising a plurality of braid elements mounted to a cooler block and a highly thermally conductive block mounted between the cooler block and the outer thermal shield. The descriptive phrase may be generated based on one or more of the metadata attributes.