Both breast-fed and formula-fed babies who had been given n-3 fatty acid enriched egg yolks had 30-40% greater red cell membrane DHA levels than those fed normal egg yolks.
In a PEM cell the membrane is coated with a catalyst that strips electrons from the fuel, usually hydrogen.
These protuberances perch on a cell's membrane and serve as gateways to the outside.
As the action potential passes, special proteinaceous gates open in the cell's membrane.
Ion channels sit in a cell's outer membrane and let electrically charged atoms (ions, as they are known in chemical jargon) in and out of the cell.
There are two dominant flavors of fuel cell: proton-exchange membrane (PEM) and solid oxide.
Nuclear-pore complexes are elaborate protein scaffolds that sit in the membrane around a cell's nucleus.
CFTR, as its name suggests, sits in the outer membrane of a cell.
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It also develops its own PEM (proton exchange membrane) fuel cell generators and has a growing business in China, where it will power the buses for the 2008 Beijing Olympics.
Such a system, Dr Dale thinks, could be the ancestor of the ribosome and, if wrapped in a fatty membrane, of the cell.
The researchers in this study examined the geometric structure and behaviour of one of the rotavirus's surface proteins, called VP4, which plays a key role in binding on to the surface of a target cell, and breaking through its membrane.
In a hydrogen fuel cell car, hydrogen gets drawn through a catalytic membrane: an electron gets stripped from the hydrogen to power the car.
But until recently they have suffered from a low power-to-weight ratio, unlike the other sort of room-temperature fuel cell, the temperamental and costly proton-exchange-membrane device, which several firms hope soon to use in motor cars.
The best-studied method is for a cell to increase the number of molecular pumps in its outer membrane.
There is particular concern about Gram-negative bacteria (like E.coli and K. pneumonia), due to their outer membrane which can prevent some antibiotics from penetrating the cell.
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