HELENE FOURNIE, ISM / SCIENCE PHOTO LIBRARY HELENE FOURNIE, ISM / SCIENCE PHOTO LIBRARY
Artwork of the plasma membrane (yellow) of a cell showing the phospholipid bilayer. Various structures are seen embedded in the membrane; membrane proteins can allow cellular recognition; ion channels can transmit ions in and out of the cell; while the plasma membrane may be semi-permeable allowing certain molecules and organisms (such as viruses) to pass through.
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