A jaw restraint is provided to temporarily secure an anvil assembly relative to a cartridge assembly during shipping. The present method utilizes an argentized cationic resin or a conditioned argentized alumina to separate compounds containing saturated or mono-unsaturated carbon chains from compounds having polyunsaturated carbon chains present in a starting composition. The proximity sensors are positioned to detect the presence or absence of sockets in the socket-receiving chambers. The second semiconductor regions are disposed between the first semiconductor regions, and have a width increasing with progressing in the direction away from the device portion.