The present invention provides fusion proteins comprising an extracellular domain of a VEGF receptor and a death ligand. At a part of this configuration, a planarizing layer covers the gate insulating layer and the data line. The secure execution environment is then validated and upon a successful validation, one or more applications are provided to the secure execution environment to be executed within the secure execution environment. The capping member is then removed. The first and second memories are identical. This membrane can yield an ion-selective electrode which permits hydrogencarbonate ions contained in body fluids to be rapidly determined with high sensitivity and high selectivity and which has a long life.