A plasma membrane is permeable to specific molecules that a cell needs. Transport proteins in the cell membrane allow for selective passage of specific molecules from the external environment.

Cell membranes protect and organize cells. All cells have an outer plasma membrane that regulates not only what enters the cell, but also how much of any given substance comes in. Unlike ...

The 3D electron microscopy imaging is available using Serial Block Face (SB-EM) and Focused Ion Beam Scanning Electron Microscopy (FIB-SEM) or Electron Tomography ... which are in the context of a ...

These discoveries, published in the journal Nature, confirm the existence of well-organized lipid domains and begin to reveal the role they play in cell survival. Cells are surrounded by a membrane - ...