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A cell membrane fluid mosaic model lays out a square patch of lipid bilayer studded with receptors and channels. Tightly packed round phospholipid heads cover the top and wavy fatty tails fill the middle. Glycoprotein receptors rise from the surface carrying beaded sugar chains, one branching into a forked tip, while large channel proteins pass through the full membrane. Bumpy heads and tangled tails make the two layers easy to see. A realistic cell biology model for a biology classroom, a lab bench or a science display shelf.

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