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 ...

“In science, structure is function,” says Lippincott-Schwartz ... In muscle cells, the ER and the plasma membrane – the outer membrane of the cell – meet at periodic contact sites, an arrangement ...

Thereafter, the idea of a lipid bilayer became the basis for future models of membrane structure. (Sadava 1993). When the use of electron microscopy started to allow examination of the plasma ...

New research details the subcellular structures in neurons that enable signals to be transmitted from where they are received at specific sites on dendrites to the decision-making cell body located ...