Venous thromboembolism overview.

This article gives a general overview of venous thromboembolism (VTE). Pathophysiology, presentation, diagnosis, and initial management of VTE are briefly reviewed. More difficult management problems are reviewed in greater depth, including duration of anticoagulation, treatment of superficial venous thrombosis, and controversies surrounding bridging therapy, with a brief review of currently available new oral anticoagulants.

Selective aluminum passivation for targeted immobilization of single DNA polymerase molecules in zero-mode waveguide nanostructures.

Optical nanostructures have enabled the creation of subdiffraction detection volumes for single-molecule fluorescence microscopy. Their applicability is extended by the ability to place molecules in the confined observation volume without interfering with their biological function. Here, we demonstrate that processive DNA synthesis thousands of bases in length was carried out by individual DNA polymerase molecules immobilized in the observation volumes of zero-mode waveguides (ZMWs) in high-density arrays.