According to the invention, there is provided a novel soybean variety designated XB11J07. The movable insert has a parallel-sided cavity which slidably receives a retractable core. In this way, damaging contacts of the solid abrasive particles with one another are minimized. In particular, this invention relates to NP derivatives having an extended in vivo half-life, and method for the treatment of cardio-vascular diseases and disorders such as acute decompensated congestive heart failure and chronic CHF.