By incorporating on-chip multiplication gain, the electron multiplying CCD achieves, in an all solid-state sensor, the single-photon detection sensitivity typical of intensified or electron-bombarded CCDs at much lower cost and without compromising the quantum efficiency and resolution characteristics of the conventional CCD structure.
Zyxin is a zinc-binding phosphoprotein that in humans is encoded by the ZYX gene. In live cells, zyxin concentrates at focal adhesions and along the intracellular actin cytoskeletal network. Focal adhesions are located at points of contact between cells and the extracellular matrix. The structures are rich in actin and are the collecting sites of protein complexes necessary for signal transduction. To produce the digital video sequences presented in this section, fox lung cells were labeled with mCherry fused to Zyxin and mEmerald fused to Lifeact.