On the other hand, cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and amino acids. The passage of these molecules relies on ...

The cell model of ion-exchange membranes reveals violations of the Onsager reciprocity principle, particularly at high ...

Actin-based vesicular trafficking of Cdc42, leading to a polarized concentration of the GTPase, has been implicated in cell polarization, but it was recently debated whether this mechanism allows ...

Diffusion is the movement of particles from ... and is one of the ways substances can move across the cell membrane, into or out of the cell. Products of digestion, dissolved in water, can pass ...

This does not require a supply of energy because diffusion is a spontaneous process. This occurs when molecules are moved across the cell membrane from an area where they are at a low ...

during this free interactive broadcast to discover how drugs pass through cell membrane solely by hitchhiking on membrane transporters and why so-called “passive diffusion” through any bilayer in real ...

Lipid membranes, which form the outer layer of cells, can be engineered to influence cellular functions. For example, ...

Researchers from the Göttingen Cluster of Excellence Multiscale Bioimaging (MBExC) have uncovered the 3D structure of the ...

During my PhD, I used a device called the rotating membrane diffusion cell along with a semi-permeable membrane made of polydimethylsiloxane (PDMS), a silicon-based rubber with slight lipophilic ...

Given these results, the researchers consider that this diffusion is the reason why ... The possibility of they may also stress a cell membrane through purely physical processes, however, is ...

Red blood cells have the shape of a flattened disk, generating a broad surface area for the diffusion of oxygen. Since their only purpose is carrying oxygen throughout the body, they lack many ...