lipid bilayer

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lipid bilayer

[¦lip·id ′bī‚lā·ər]
(cell and molecular biology)
The foundational structure of plasma membranes; it is composed of two layers of phospholipids positioned such that their polar hydrophilic heads face outward and their nonpolar hydrophobic tails are directed inward, blocking entry of water and water-soluble material into the cell.
References in periodicals archive ?
They are large organelles that are surrounded by two phospholipid bilayer membranes.
Channels formed in phospholipid bilayer membranes by diphtheria, tetanus, botulinum and anthrax toxin.
Unlike most inorganic heavy metals, methylmercury is lipophilic and may permeate cells directly through the phospholipid bilayer or as a cysteine complex and exert intracellular effects in addition to blocking the channel pore.
Life's structural unit is a phospholipid bilayer with embedded proteins surrounding an enzyme-rich (protein) cytoplasm and amino acid containing DNA molecule(s).
Interactions between neutral phospholipid bilayer membranes.