We are taught that plasma membranes are a typical lipid bilayer, but how do we know this, and who figured it out? Aa Aa Aa Most books mention that membranes have a typical "lipid bilayer," but why ...

Decades of work have yielded lipid nanoparticle structures that deliver RNA to specific locations in the body. This ...

The hydrophilic head is composed of a choline structure (blue) and a phosphate (orange). This head is connected to a glycerol (green) with two hydrophobic tails (purple) called fatty acids.

The lipids in the samples were identified using mass spectrometry, which allows determining a molecule's structure from the mass to charge ratio and its motion pattern in a magnetic field.