Receive emails about upcoming NOVA programs and related content, as well as featured reporting about current events through a science lens. Our first question was about the concept of molecular ...

Three sets of conserved polarity proteins — the partitioning defective (PAR), Scribble and Crumbs complexes — regulate polarization processes in many different cell types and organisms, including ...

Most cells in the body are polarized, showing some level of shape and functional asymmetry, such as apico–basal or front–back polarity. Tissues are formed from the coordinated integration of ...

An electron microscopy study revealed key details of actin filaments, which are essential structural elements of cells and muscles. Actin filaments -- protein structures critical to living movement ...