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A gated ion channel protein standing tall through a slab of cell membrane, split down the middle to reveal its central pore. Lumpy protein subunits bulge above and below the membrane, while ribbed helical columns line the channel walls and form the voltage sensor domains. On both sides, the lipid bilayer shows rounded heads on each surface with wavy tails between. Rough, organic and full of detail, it suits a neuroscience lesson, a cell biology classroom or a desk display about how nerve signals start.

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