Nonvolatile memory devices support programming and verify operations that improve threshold-voltage distribution within programmed memory cells. For example, n inverterconverter system according to various aspects of the present invention may include an inductor comprising a substantially annular core and a winding. In additional testing a second gene, PP30, was identified that exhibited adjuvant activity in the absence of stimulating dendritic cell accumulation at the site of inoculation. The stem is mounted with an electrode and includes a current in-lead which is connected to the electrode.