In general, the invention is directed to an apparatus and method for determining whether an identified atrial tachyarrhythmia episode has terminated. 4 wt % of thorium oxide, the metal halide contains scandium iodide, and a pressure of the xenon sealed in the arc tube is at least 0. A differential amplifier amplifies the difference between the output of the phase comparator and a reference voltage. 2CC8 and 4H84 antibodies bind to the same region of HLA-G, which is a different region than that bound by 3CG4. In an electrochemical mechanical polishing process, the retaining ring can be biased separately from a substrate being polished. A shape memory alloy is a metal alloy that \u201cremembers\u201d its set shape and has superelastic properties.