Transport of molecules within a cell and out of the cell requires a complex endomembrane system. Endocytosis occurs when the cell membrane engulfs particles (dark blue) outside the cell ...

The ability to maintain concentration gradients and sometimes move materials against them is vital to cell health and maintenance. Thanks to membrane barriers and transport proteins, the cell can ...

that acts like a cellular transport freeze technique. By simply illuminating cells with light, it can halt the movement of specific transport vesicles inside cells within seconds, as if they were ...